Fedora 39 Flatpaks update for firefox-flatpak

1) Out-of-bounds write

EUVDB-ID: #VU83367

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-2023-6204

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing HTML content in in WebGL2 blitFramebuffer. A remote attacker can trick the victim ti visit a specially crafted website, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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) Use-after-free

EUVDB-ID: #VU83368

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-2023-6205

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the MessagePort::Entangled() method. A remote attacker can trick the victim to open a specially crafted website, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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) Multiple Interpretations of UI Input

EUVDB-ID: #VU83369

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-6206

CWE-ID: CWE-450 - Multiple Interpretations of UI Input

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform clickjacking attack.

The vulnerability exists due to the black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. A remote attacker can perform clickjacking attack and trick the victim into pressing the permissions grant button.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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.

4) Use-after-free

EUVDB-ID: #VU83370

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-2023-6207

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the ReadableByteStreamQueueEntry::Buffer() method. A remote attacker can trick the victim to open a specially crafted website, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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.

5) Information disclosure

EUVDB-ID: #VU83371

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-2023-6208

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to the Selection API copies text by mistake into the primary selection, a temporary storage not unlike the clipboard, when using on X11. A local user can gain access to potentially sensitive information.

Note, the vulnerability affects only Firefox installations on X11.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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) Input validation error

EUVDB-ID: #VU83372

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-6209

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to manipulate data on websites.

The vulnerability exists due to insufficient validation of user-supplied input when parsing relative URLs that start with a triple slash, e.g. "///". A remote attacker can use a path-traversal "/../" part in the path to override the specified host.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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.

7) Memory corruption

EUVDB-ID: #VU83373

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-2023-6212

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can trick the victim ti visit a specially crafted website, trigger a memory corruption and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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.

8) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU83374

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-6210

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to application does not properly impose security restrictions. When an https: web page created a pop-up from a "javascript:" URL, that pop-up was incorrectly allowed to load blockable content, such as iframes from insecure http: URLs.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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.

9) Multiple Interpretations of UI Input

EUVDB-ID: #VU83375

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-6211

CWE-ID: CWE-450 - Multiple Interpretations of UI Input

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform clickjacking attack.

If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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.

10) Buffer overflow

EUVDB-ID: #VU83376

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-2023-6213

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. A remote attacker can create a specially crafted website, 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

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

firefox-flatpak: before 120.0-2

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-85f15b91dc

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.

Risk	High
Patch available	YES
Number of vulnerabilities	10
CVE-ID	CVE-2023-6204 CVE-2023-6205 CVE-2023-6206 CVE-2023-6207 CVE-2023-6208 CVE-2023-6209 CVE-2023-6212 CVE-2023-6210 CVE-2023-6211 CVE-2023-6213
CWE-ID	CWE-787 CWE-416 CWE-450 CWE-200 CWE-20 CWE-119 CWE-264
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Fedora Operating systems & Components / Operating system firefox-flatpak Operating systems & Components / Operating system package or component
Vendor	Fedoraproject