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MFSA2023-34 Firefox: Security Vulnerabilities fixed in Firefox 117 (CVE-2023-4578)

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MFSA2023-34 Firefox: Security Vulnerabilities fixed in Firefox 117 (CVE-2023-4578)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
08/29/2023
Created
08/30/2023
Added
08/30/2023
Modified
01/28/2025

Description

When calling `JS::CheckRegExpSyntax` a Syntax Error could have been set which would end in calling `convertToRuntimeErrorAndClear`. A path in the function could attempt to allocate memory when none is available which would have caused a newly created Out of Memory exception to be mishandled as a Syntax Error. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

Solution(s)

  • mozilla-firefox-upgrade-117_0

References

  • https://attackerkb.com/topics/cve-2023-4578
  • CVE - 2023-4578
  • http://www.mozilla.org/security/announce/2023/mfsa2023-34.html
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