Published: 18/05/2021 Updated: 07/11/2023

CVSS v2 Base Score: 2.1 | Impact Score: 2.9 | Exploitability Score: 3.9

CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8

VMScore: 187

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src/parser.c, which could cause a denial of service via the pointer variable caller->callee.

Vulnerable Product	Search on Vulmon	Subscribe to Product
gnu cflow 1.6
fedoraproject fedora 33
fedoraproject fedora 34

Debian Bug report logs - #988985 CVE-2020-23856 Package: cflow; Maintainer for cflow is Debian QA Group <packages@qadebianorg>; Source for cflow is src:cflow (PTS, buildd, popcon) Reported by: Moritz Muehlenhoff <jmm@debianorg> Date: Sat, 22 May 2021 15:15:02 UTC Severity: normal Tags: security, upstream Found i ...

CWE-416 https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988985 https://nvd.nist.gov

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CVE-2020-23856

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