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CVE-2018-20969

UnknownEPSS 2.71%

Last modified

CVE-2018-20969 is a vulnerability of currently unknown severity. do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.. EPSS estimates a 2.71% chance of exploitation in the next 30 days.

Description

do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.

Metrics

EPSS Probability
2.71%

84.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GnuPatch<= 2.7.6

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-20969?
do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.
How severe is CVE-2018-20969?
Severity scoring for CVE-2018-20969 is pending analysis. The EPSS model estimates a 2.71% probability of exploitation in the next 30 days.
How do I fix CVE-2018-20969?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST