Update: CVE-2021-20193 has been assigned to this vulnerability by Red Hat Security team.
--- Carlos ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2021-20193 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to tar in Ubuntu. https://bugs.launchpad.net/bugs/1912091 Title: Memory Leak GNU Tar 1.33 Status in tar package in Ubuntu: New Bug description: An issue was discovered in GNU Tar 1.33 and earlier. There is a memory leak in read_header() in list.c in the tar application. Occastionally, ASAN detects an out of bounds memory read. Valgrind confirms the memory leak in the standard tar tool installed by default. This degrades the availability of the tar tool, and could potentially result in other memory-related issues. Common Weakness Enumeration IDs for reference: CWE-401: Missing Release of Memory after Effective Lifetime CWE-125: Out-of-bounds Read Attached to this report is a PoC malcrafted file "1311745-out- bounds.tar" VALGRIND OUTPUT: valgrind tar -xf 1311745-out-bounds.tar ==3776== Memcheck, a memory error detector ==3776== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==3776== Using Valgrind-3.16.1 and LibVEX; rerun with -h for copyright info ==3776== Command: tar -xf output/1311745-out-bounds.tar ==3776== tar: Unexpected EOF in archive tar: Exiting with failure status due to previous errors ==3776== ==3776== HEAP SUMMARY: ==3776== in use at exit: 1,311,761 bytes in 2 blocks ==3776== total heap usage: 52 allocs, 50 frees, 1,349,212 bytes allocated ==3776== ==3776== LEAK SUMMARY: ==3776== definitely lost: 1,311,745 bytes in 1 blocks ... NOTE: Version 1.30, 1.32, 1.33 were tested and confirmed to be vulnerable. lsb_release -rd Description: Ubuntu 20.04.1 LTS Release: 20.04 apt-cache policy tar tar: Installed: 1.30+dfsg-7ubuntu0.20.04.1 Candidate: 1.30+dfsg-7ubuntu0.20.04.1 --- Carlos To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tar/+bug/1912091/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp