NULL pointer dereference in GNU Tar
CVE-2019-9923
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.032 (88.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.032 · change: +0.001
Affected products
- GNU Tar
- openSUSE Leap — versions 15.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.launchpad.net/ubuntu/+source/tar/+bug/1810241 (Patch, Third Party Advisory, Issue Tracking)
- git.savannah.gnu.org/cgit/tar.git/commit/ (Patch, Mailing List, Vendor Advisory)
- savannah.gnu.org/bugs/ (Permissions Required, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a4508… (mailing-list)
- lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698… (mailing-list)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2019-9923?
- CVE-2019-9923 is a high-severity vulnerability in GNU Tar, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2019-03-22.
- How severe is CVE-2019-9923?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-9923 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.