CVE-2019-9923

Tar vulnerability

CVSS

7.5

EPSS

3.0%

EPSS pct

86th

Exploited

No known

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.

Affected vendor

Gnu

Affected product

Tar

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness type (CWE)

CWE-476 — NULL Pointer Dereference

Published

2019-03-22

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 3.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2019-9923

Confirm whether Gnu Tar is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2019-9923.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-9923

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-9923 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2019-9923?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2019-9923.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH

CVE-2008-5262

Developers Image Library vulnerability

Secure Backup vulnerability