CVE-2023-4578 — Allocation of Resources Without Limits or Throttling in Mozilla Firefox
Severity
6.5MEDIUMNVD
OSV8.8
EPSS
0.2%
top 64.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 11
Latest updateOct 3
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6
Affected Packages9 packages
🔴Vulnerability Details
5CVEList
▶
OSV▶
CVE-2023-4578: When calling `JS::CheckRegExpSyntax` a Syntax Error could have been set which would end in calling `convertToRuntimeErrorAndClear`↗2023-09-11
GHSA▶
GHSA-phv6-6pfh-prxc: When calling `JS::CheckRegExpSyntax` a Syntax Error could have been set which would end in calling `convertToRuntimeErrorAndClear`↗2023-09-11