Arch Linux update for wpewebkit

1) Memory corruption

EUVDB-ID: #VU56730

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-30846

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package wpewebkit to version 2.34.1-1.

Vulnerable software versions

Arch Linux: All versions

wpewebkit: before 2.34.1-1

CPE2.3

External links

https://security.archlinux.org/advisory/ASA-202110-10

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Memory corruption

EUVDB-ID: #VU56733

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-30851

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package wpewebkit to version 2.34.1-1.

Vulnerable software versions

Arch Linux: All versions

wpewebkit: before 2.34.1-1

CPE2.3

External links

https://security.archlinux.org/advisory/ASA-202110-10

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Security restrictins bypass

EUVDB-ID: #VU57176

Risk: Low

CVSSv4.0: 5.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-41133

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to an error in the VFS-manipulating syscalls implementation. A local user can bypass sandbox restrictions and escalate privileges on the system.

Mitigation

Update the affected package wpewebkit to version 2.34.1-1.

Vulnerable software versions

Arch Linux: All versions

wpewebkit: before 2.34.1-1

CPE2.3

External links

https://security.archlinux.org/advisory/ASA-202110-10

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) Security restrictions bypass

EUVDB-ID: #VU57811

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-42762

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists in BubblewrapLauncher.cpp due to application allows a sandboxed process to trick host processes into thinking the sandboxed process is not confined by the sandbox. A local user can abuse the VFS syscalls that manipulate its filesystem namespace and bypass implemented security restrictions. The impact is limited to host services that create UNIX sockets that WebKit mounts inside its sandbox, and the sandboxed process remains otherwise confined.

Mitigation

Update the affected package wpewebkit to version 2.34.1-1.

Vulnerable software versions

Arch Linux: All versions

wpewebkit: before 2.34.1-1

CPE2.3

External links

https://security.archlinux.org/advisory/ASA-202110-10

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	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2021-30846 CVE-2021-30851 CVE-2021-41133 CVE-2021-42762
CWE-ID	CWE-119 CWE-264
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Arch Linux Operating systems & Components / Operating system wpewebkit Operating systems & Components / Operating system package or component
Vendor	Arch Linux