CVE-2022-41715GO-2022-1039BIT-GOLANG-2022-41715
Memory exhaustion when compiling regular expressions in regexp/syntax
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.18.7, 1.19.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Programs which compile regular expressions from untrusted sources may be vulnerable to memory exhaustion or denial of service. The parsed regexp representation is linear in the size of the input, but in some cases the constant factor can be as high as 40,000, making relatively small regexps consume much larger amounts of memory. After fix, each regexp being parsed is limited to a 256 MB memory footprint. Regular expressions whose representation would use more space than that are rejected. Normal use of regular expressions is unaffected.
Timeline
- CVE published
- Record last updated
Affected versions
- regexp/syntax
fixed in 1.18.7; From 1.19.0-0 · fixed in 1.19.2
- stdlibGo
fixed in 1.18.7; From 1.19.0-0 · fixed in 1.19.2