CVE-2020-14315

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-09-16 · updated 2026-06-17
Weakness: CWE-787

Description

A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.

Affected products

bsdiff: 4.3

References

https://bugzilla.redhat.com/show_bug.cgi?id=1856747
https://www.openwall.com/lists/oss-security/2020/07/09/2
https://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/
https://bugzilla.redhat.com/show_bug.cgi?id=1856747
https://www.openwall.com/lists/oss-security/2020/07/09/2
https://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/

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