CVE-2020-28949

php archive tar, debian linux, fedoraproject fedora

Published 19 Nov 2020 · updated 17 Jun 2026 · Analyzed

7.8 High · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 25 Aug 2022, with a remediation deadline of 15 Sept 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed.

References

packetstormsecurity.com/files/161095/PEAR-Archive_Tar-Arbitrary-File-Write.html · Exploit, Third Party Advisory, VDB Entry
github.com/pear/Archive_Tar/issues/33 · Exploit, Issue Tracking, Vendor Advisory
lists.debian.org/debian-lts-announce/2020/11/msg00045.html · Mailing List, Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR/ · Mailing List, Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4V35LBRM6HBCXBVCITKQ4UEBTXO2EG7B/ · Mailing List, Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/ · Mailing List, Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/ · Mailing List, Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NBYZSHYTIOBK6V7C4N7TP6KIKCRKLVWP/ · Mailing List, Third Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N/ · Mailing List, Third Party Advisory
security.gentoo.org/glsa/202101-23 · Third Party Advisory
www.debian.org/security/2020/dsa-4817 · Mailing List, Third Party Advisory
www.drupal.org/sa-core-2020-013 · Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-28949 · US Government Resource