Memory exhaustion when compiling regular expressions in regexp/syntax
CVE-2022-41715

7.5HIGH

Key Information:

Vendor

Go Standard Library

Status
Regexp/syntax
Vendor
CVE Published:
14 October 2022

What is CVE-2022-41715?

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.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

regexp/syntax 0 < 1.18.7

regexp/syntax 1.19.0-0 < 1.19.2

References

https://go.dev/issue/55949
https://go.dev/cl/439356
https://groups.google.com/g/golang-announce/c/xtuG5faxtaU

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Adam Korczynski (ADA Logics)
OSS-Fuzz
JSON
.