SB2024010213 - Red Hat Enterprise Linux 7 update for firefox
Published: January 2, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 secuirty vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2023-6856)
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) Buffer overflow (CVE-ID: CVE-2023-6864)
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.
3) Use of Uninitialized Variable (CVE-ID: CVE-2023-6865)
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.
4) Buffer Underwrite ('Buffer Underflow') (CVE-ID: CVE-2023-6857)
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).
5) Heap-based buffer overflow (CVE-ID: CVE-2023-6858)
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.
6) Use-after-free (CVE-ID: CVE-2023-6859)
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.
7) Security features bypass (CVE-ID: CVE-2023-6860)
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.
8) Heap-based buffer overflow (CVE-ID: CVE-2023-6861)
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) Use-after-free (CVE-ID: CVE-2023-6862)
The vulnerability allows a remote attacker to crash the browser.
The vulnerability exists due to a use-after-free error in nsDNSService::Init during browser startup. A remote attacker with control over the DNS server can cause the browser to crash.
10) Multiple Interpretations of UI Input (CVE-ID: CVE-2023-6867)
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.
11) Reliance on undefined behavior (CVE-ID: CVE-2023-6863)
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.
Remediation
Install update from vendor's website.