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CVE Vulnerabilities

CVE-2023-4863

Out-of-bounds Write

Published: Sep 12, 2023 | Modified: Oct 24, 2025
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
9.6 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-4863
CWEhttps://cwe.mitre.org/data/definitions/787.html

Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)

Weakness

The product writes data past the end, or before the beginning, of the intended buffer.

Affected Software

NameVendorStart VersionEnd Version
ChromeGoogle*116.0.5845.187 (excluding)
Red Hat Enterprise Linux 7RedHatthunderbird-0:102.15.1-1.el7_9*
Red Hat Enterprise Linux 7RedHatfirefox-0:102.15.1-1.el7_9*
Red Hat Enterprise Linux 8RedHatfirefox-0:102.15.1-1.el8_8*
Red Hat Enterprise Linux 8RedHatthunderbird-0:102.15.1-1.el8_8*
Red Hat Enterprise Linux 8RedHatlibwebp-0:1.0.0-8.el8_8.1*
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRedHatfirefox-0:102.15.1-1.el8_1*
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRedHatthunderbird-0:102.15.1-1.el8_1*
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRedHatlibwebp-0:1.0.0-5.2.el8_1.1*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatthunderbird-0:102.15.1-1.el8_2*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatfirefox-0:102.15.1-1.el8_2*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatlibwebp-0:1.0.0-7.el8_2.1*
Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRedHatthunderbird-0:102.15.1-1.el8_2*
Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRedHatfirefox-0:102.15.1-1.el8_2*
Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRedHatlibwebp-0:1.0.0-7.el8_2.1*
Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRedHatthunderbird-0:102.15.1-1.el8_2*
Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRedHatfirefox-0:102.15.1-1.el8_2*
Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRedHatlibwebp-0:1.0.0-7.el8_2.1*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatthunderbird-0:102.15.1-1.el8_4*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatfirefox-0:102.15.1-1.el8_4*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatlibwebp-0:1.0.0-7.el8_4.1*
Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRedHatthunderbird-0:102.15.1-1.el8_4*
Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRedHatfirefox-0:102.15.1-1.el8_4*
Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRedHatlibwebp-0:1.0.0-7.el8_4.1*
Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRedHatthunderbird-0:102.15.1-1.el8_4*
Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRedHatfirefox-0:102.15.1-1.el8_4*
Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRedHatlibwebp-0:1.0.0-7.el8_4.1*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatlibwebp-0:1.0.0-7.el8_6.1*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatfirefox-0:102.15.1-1.el8_6*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatthunderbird-0:102.15.1-1.el8_6*
Red Hat Enterprise Linux 9RedHatrhel9/firefox-flatpak:flatpak-9020020231006113910.2*
Red Hat Enterprise Linux 9RedHatrhel9/thunderbird-flatpak:flatpak-9020020231006114109.1*
Red Hat Enterprise Linux 9RedHatfirefox-0:102.15.1-1.el9_2*
Red Hat Enterprise Linux 9RedHatlibwebp-0:1.2.0-7.el9_2*
Red Hat Enterprise Linux 9RedHatthunderbird-0:102.15.1-1.el9_2*
Red Hat Enterprise Linux 9.0 Extended Update SupportRedHatlibwebp-0:1.2.0-6.el9_0*
Red Hat Enterprise Linux 9.0 Extended Update SupportRedHatfirefox-0:102.15.1-1.el9_0*
Red Hat Enterprise Linux 9.0 Extended Update SupportRedHatthunderbird-0:102.15.1-1.el9_0*
Chromium-browserUbuntubionic*
Chromium-browserUbuntutrusty*
Chromium-browserUbuntuupstream*
Chromium-browserUbuntuxenial*
FirefoxUbuntubionic*
FirefoxUbuntufocal*
FirefoxUbuntutrusty*
FirefoxUbuntuupstream*
FirefoxUbuntuxenial*
LibwebpUbuntubionic*
LibwebpUbuntudevel*
LibwebpUbuntuesm-infra/bionic*
LibwebpUbuntuesm-infra/focal*
LibwebpUbuntufocal*
LibwebpUbuntujammy*
LibwebpUbuntulunar*
LibwebpUbuntumantic*
LibwebpUbuntunoble*
LibwebpUbuntutrusty*
LibwebpUbuntuxenial*
ThunderbirdUbuntubionic*
ThunderbirdUbuntudevel*
ThunderbirdUbuntufocal*
ThunderbirdUbuntujammy*
ThunderbirdUbuntulunar*
ThunderbirdUbuntumantic*
ThunderbirdUbuntunoble*
ThunderbirdUbuntutrusty*
ThunderbirdUbuntuupstream*
ThunderbirdUbuntuxenial*

Potential Mitigations

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.

  • For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.

  • Be wary that a language’s interface to native code may still be subject to overflows, even if the language itself is theoretically safe.

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.

  • Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.

  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.

  • D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.

  • Consider adhering to the following rules when allocating and managing an application’s memory:

  • Run or compile the software using features or extensions that randomly arrange the positions of a program’s executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.

  • Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as “rebasing” (for Windows) and “prelinking” (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.

  • For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].

  • Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.

  • For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].

References

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