SB2023122118 - Fedora 39 Flatpaks update for firefox-flatpak, flatpak-runtime, flatpak-sdk

Description

This security bulletin contains information about 17 vulnerabilities.

1) Heap-based buffer overflow (CVE-ID: CVE-2023-6856)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 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

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

The vulnerability exists due to a boundary error within the WebGL DrawElementsInstanced method when used on systems with the Mesa VM driver. A remote attacker can trick the victim to visit a specially crafted website, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

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

2) Use of Uninitialized Variable (CVE-ID: CVE-2023-6865)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to access to uninitialized data in EncryptingOutputStream. A remote attacker can trick the victim to visit a specially crafted website, trigger memory corruption and write data to a local disk, which may have implications for private browsing mode.

3) Buffer Underwrite ('Buffer Underflow') (CVE-ID: CVE-2023-6857)

CWE-ID: CWE-124 - Buffer Underwrite ('Buffer Underflow')

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

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

The vulnerability exists due to an error when handling symbolic links. A local user can trigger a race when the browser resolves a symbolic link, where the buffer passed to readlink may actually be smaller than necessary. A local user can gain access to potentially sensitive information.

The vulnerability affects Unix based operating systems only (e.g. Android, Linux, MacOS).

4) Heap-based buffer overflow (CVE-ID: CVE-2023-6858)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in nsTextFragment when handling out-of-memory situations. A remote attacker can trick the victim to visit a specially crafted website, trigger a heap overflow and crash the browser.

5) Use-after-free (CVE-ID: CVE-2023-6859)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in PR_GetIdentitiesLayer when creating the TLS socket. A remote attacker can trick the victim to visit a specially crafted website and crash the browser.

6) Security features bypass (CVE-ID: CVE-2023-6860)

CWE-ID: CWE-254 - Security Features

CVSSv4: 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

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

The vulnerability exists due to VideoBridge lack of texture validation. A remote attacker can trick the victim to open a specially crafted website, escape the sandbox and gain access to sensitive information.

7) Multiple Interpretations of UI Input (CVE-ID: CVE-2023-6867)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform clickjacking attack.

The vulnerability exists due to a timing issue when the user clicks on a button. The timing of a button click causing a popup to disappear was approximately the same length as the anti-clickjacking delay on permission prompts. A remote attacker can perform clickjacking attack.

8) Heap-based buffer overflow (CVE-ID: CVE-2023-6861)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to a boundary error within the nsWindow::PickerOpen(void) method when the browser is running in headless mode. A remote attacker can trick the victim to visit a specially crafted website, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

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

9) Reliance on undefined behavior (CVE-ID: CVE-2023-6863)

CWE-ID: CWE-758 - Reliance on Undefined, Unspecified, or Implementation-Defined Behavior

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to reliance on undefined behavior in ShutdownObserver(). A remote attacker can crash the browser.

10) Buffer overflow (CVE-ID: CVE-2023-6864)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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

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.

11) Insufficient UI Warning of Dangerous Operations (CVE-ID: CVE-2023-6871)

CWE-ID: CWE-357 - Insufficient UI Warning of Dangerous Operations

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to lack of protocol handler warning when navigating to a new protocol handler. A remote attacker can perform spoofing attack.

12) Insufficient UI Warning of Dangerous Operations (CVE-ID: CVE-2023-6870)

CWE-ID: CWE-357 - Insufficient UI Warning of Dangerous Operations

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to an error when handling Toast notifications. Applications which spawn a Toast notification in a background thread can obscure fullscreen notifications displayed by the browser.

13) Multiple Interpretations of UI Input (CVE-ID: CVE-2023-6869)

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

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

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to an error when displaying browser content. A <dialog> element can be manipulated to paint content outside of a sandboxed iframe, which could allow untrusted content to display under the guise of trusted content.

14) Observable discrepancy (CVE-ID: CVE-2023-6135)

CWE-ID: CWE-203 - Observable discrepancy

CVSSv4: 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

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to a side-channel attack in multiple NSS NIST curves, known as "Minerva". A remote attacker can recover the private key and decrypt data passed between server and client.

15) Improper handling of exceptional conditions (CVE-ID: CVE-2023-6866)

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

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

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper handling of errors in TypedArrays. A remote attacker can trick the victim to open a specially crafted website and perform a denial of service (DoS) attack.

16) Buffer overflow (CVE-ID: CVE-2023-6873)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 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

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.

17) Inclusion of Sensitive Information in Log Files (CVE-ID: CVE-2023-6872)

CWE-ID: CWE-532 - Information Exposure Through Log Files

CVSSv4: 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

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

The vulnerability exists due to Browser tab titles are leaked by GNOME to system logs. A local user can read the log files and gain access to sensitive data.

Remediation

Install update from vendor's website.

References

• https://bodhi.fedoraproject.org/updates/FEDORA-FLATPAK-2023-6328417221