PT-2020-14702 · Bsdiff4 · Bsdiff4

Robert Scott · Published 2020-07-22 · Updated 2023-01-28 · CVE-2020-15904

Positive Technologies (AI Summary)

CVSS v4.0

8.5

High

Base vector

AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions bsdiff4 versions prior to 1.2.0

Description A buffer overflow in the patching routine allows an attacker to write to heap memory beyond allocated bounds via a crafted patch file.

Recommendations For versions prior to 1.2.0, update to version 1.2.0 or later to resolve the issue.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2020-15904

GHSA-F8M3-JPXR-HM5X

PYSEC-2020-30

Affected Products

Bsdiff4

References · 10

• https://github.com/ilanschnell/bsdiff4/commit/49a4cee2feef7deaf9d89e5e793a8824930284d7 · Patch
• https://osv.dev/vulnerability/PYSEC-2020-30 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-f8m3-jpxr-hm5x · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-15904 · Security Note
• https://osv.dev/vulnerability/CVE-2020-15904 · Vendor Advisory
• https://github.com/pypa/advisory-database/tree/main/vulns/bsdiff4/PYSEC-2020-30.yaml · Note
• https://github.com/ilanschnell/bsdiff4/blob/master/CHANGELOG.txt · Note
• https://github.com/ilanschnell/bsdiff4/blob/9a84c2ee01f5ba0742d18c9f3b3d5244ae7fb302/CHANGELOG.txt#L30-L31 · Note
• https://github.com/ilanschnell/bsdiff4 · Note
• https://t.me/cvenotify/42994 · Telegram Post