| Name | CVE-2020-23856 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 988985 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| cflow (PTS) | jessie, stretch | 1:1.4+dfsg1-3 | vulnerable |
| buster | 1:1.6-1 | vulnerable |
| bullseye | 1:1.6-4 | vulnerable |
| bookworm | 1:1.7-4 | fixed |
| sid, trixie | 1:1.7-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| cflow | source | jessie | (unfixed) | end-of-life | | |
| cflow | source | (unstable) | 1:1.6-6 | unimportant | | 988985 |
Notes
https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html
https://git.savannah.gnu.org/cgit/cflow.git/commit/?id=b9a7cd5e9d4efb54141dd0d11c319bb97a4600c6
Crash in CLI tool, no security impact