CVE-2019-9923 Null dereference in n/a
A NULL pointer dereference in GNU Tar allows attackers to cause a denial of service via malformed extended headers in archives.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-9923?
CVE-2019-9923 is a high-severity vulnerability in Opensuse Leap, published on 22 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers.
Weakness: CWE-476
Which versions are affected by CVE-2019-9923?
It affects 2 products.
Products include Gnu Tar, Opensuse Leap.
How do I fix CVE-2019-9923?
Upgrade to a fixed version.
Is CVE-2019-9923 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-9923 exists.
Other vulnerabilities in Opensuse Leap
Sources
Also known as CLSA-2025-1761744879, CLSA-2026-1777043727, CLSA-2026-1777049076, CLSA-2026-1777563191, CLSA-2026-1777564129, DEBIAN-CVE-2019-9923 and 3 more.