Gentoo update for X.Org X server, XWayland

1) Out-of-bounds write

EUVDB-ID: #VU59045

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2021-4008

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the SProcRenderCompositeGlyphs() function in the Render extension. A local user can send a specially crafted CompositeGlyphs request, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds write

EUVDB-ID: #VU59046

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2021-4009

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the ProcXFixesCreatePointerBarrier() function in the XFixes extension. A local user can send a specially crafted CreatePointerBarrier request, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Out-of-bounds write

EUVDB-ID: #VU59047

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2021-4010

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the SProcScreenSaverSuspend() function in the Screen Saver extension. A local user can send a specially crafted Suspend request, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Out-of-bounds write

EUVDB-ID: #VU59048

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2021-4011

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the SwapCreateRegister() function in the Record extension. A local user can send a specially crafted RecordCreateContext and RecordRegisterClients requests, trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Buffer overflow

EUVDB-ID: #VU68415

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3550

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the _GetCountedString() function in xkb/xkb.c. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Memory leak

EUVDB-ID: #VU68416

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3551

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak within the ProcXkbGetKbdByName() function in xkb/xkb.c. A local user can force the application to leak memory and perform denial of service attack.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Memory leak

EUVDB-ID: #VU68417

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3553

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak within the xquartz component in hw/xquartz/X11Controller.m. A local user can force the application to leak memory and perform denial of service attack.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Use-after-free

EUVDB-ID: #VU70438

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-4283

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error when handling XkbCopyNames requests. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Stack-based buffer overflow

EUVDB-ID: #VU70433

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-46340

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the swap handler for the XTestFakeInput request of the XTest extension if GenericEvents with lengths larger than 32 bytes are sent through a the XTestFakeInput request. A local user can trigger a stack-based buffer overflow and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Out-of-bounds read

EUVDB-ID: #VU70434

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-46341

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when handling XIPassiveUngrab requests. A local user can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

11) Use-after-free

EUVDB-ID: #VU70435

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-46342

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error when handling XvdiSelectVideoNotify requests. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

12) Use-after-free

EUVDB-ID: #VU70436

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-46343

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error when handling ScreenSaverSetAttributes requests. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

13) Out-of-bounds read

EUVDB-ID: #VU70437

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-46344

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when handling XIChangeProperty requests. A local user can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

14) Use-after-free

EUVDB-ID: #VU71991

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2023-0494

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within DeepCopyPointerClasses. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

15) Use-after-free

EUVDB-ID: #VU74180

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-1393

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error when processing deletion of a compositor overlay window. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Mitigation

Update the affected packages.
x11-base/xorg-server to version: 21.1.8
x11-base/xwayland to version: 23.1.1

Vulnerable software versions

Gentoo Linux: All versions

x11-base/xwayland: before 23.1.1

x11-base/xorg-server: before 21.1.8

CPE2.3

External links

https://security.gentoo.org/glsa/202305-30

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Risk	Low
Patch available	YES
Number of vulnerabilities	15
CVE-ID	CVE-2021-4008 CVE-2021-4009 CVE-2021-4010 CVE-2021-4011 CVE-2022-3550 CVE-2022-3551 CVE-2022-3553 CVE-2022-4283 CVE-2022-46340 CVE-2022-46341 CVE-2022-46342 CVE-2022-46343 CVE-2022-46344 CVE-2023-0494 CVE-2023-1393
CWE-ID	CWE-787 CWE-119 CWE-401 CWE-416 CWE-121 CWE-125
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	Gentoo Linux Operating systems & Components / Operating system x11-base/xwayland Operating systems & Components / Operating system package or component x11-base/xorg-server Operating systems & Components / Operating system package or component
Vendor	Gentoo