CVE-2021-3516

Aliases:DEBIAN-CVE-2021-3516
Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 01 Jun 2021, 13:38
Last modified:03 Aug 2024, 16:53

Vulnerability Summary

Overall Risk (default)
medium
42/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
1.99% LOW
2% probability +1.63%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

01 Jun 2021, 13:38
Published
Vulnerability first disclosed
03 Aug 2024, 16:53
Last Modified
Vulnerability information updated

Description

There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 1.99%• Percentile: 80%

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•libxml2

    < 2.9.10+dfsg-6.6 | < 2.9.10+dfsg-6.6 | < 2.9.10+dfsg-6.6 | < 2.9.10+dfsg-6.6

  • debian•debian_linux

    9.0

  • fedoraproject•fedora

    33 | 34

  • netapp•clustered_data_ontap

    na

  • netapp•clustered_data_ontap_antivirus_connector

    na

  • netapp•ontap_select_deploy_administration_utility

    na

  • oracle•zfs_storage_appliance_kit

    8.8

  • redhat•enterprise_linux

    6.0 | 7.0 | 8.0

  • redhat•jboss_core_services

    na

  • xmlsoft•xmllint

    < 2.9.11

References (10)