CVE-2019-18197

Advisory lineage Upstream: 0 Downstream: 19
Modified
Published: 18 Oct 2019, 20:07
Last modified:28 May 2026, 18:27

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
4.53% LOW
5% probability -0.24%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Oct 2019, 20:07
Published
Vulnerability first disclosed
28 May 2026, 18:27
Last Modified
Vulnerability information updated

Description

In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 5.1AV:N/AC:H/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 4.53%• Percentile: 89%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

  • CWE-908•Use of Uninitialized Resource

    The product uses or accesses a resource that has not been initialized.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 18.04 | 19.04 | 19.10

  • debian•debian_linux

    8.0

  • xmlsoft•libxslt

    1.1.33

References (15)