What’s Vulnerable › Vulnerabilities

CVE-2016-4021

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-05-26 · updated 2026-06-17
• Weakness: CWE-399

Description

The read_binary function in buffer.c in pgpdump before 0.30 allows context-dependent attackers to cause a denial of service (infinite loop and CPU consumption) via crafted input, as demonstrated by the \xa3\x03 string.

Affected products

• Fedoraproject Fedora: 22, 23, 24
• Pgpdump Project Pgpdump: through 0.29

References

• http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183750.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184617.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184689.html
• http://seclists.org/bugtraq/2016/Apr/99
• https://github.com/kazu-yamamoto/pgpdump/pull/16
• https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2016-030.txt
• http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183750.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184617.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184689.html
• http://seclists.org/bugtraq/2016/Apr/99
• https://github.com/kazu-yamamoto/pgpdump/pull/16
• https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2016-030.txt

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