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.

EPSS: 0.030 (85.7th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
  • cve@mitre.org (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)
  • cve@mitre.org (Permissions Required, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
  • cve@mitre.org (mailing-list, x_refsource_MLIST)
  • cve@mitre.org (mailing-list, x_refsource_MLIST)

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.