CVE-2021-28041

Aliases:DEBIAN-CVE-2021-28041ALPINE-CVE-2021-28041
Advisory lineage Upstream: 0 Downstream: 8
Modified
Published: 05 Mar 2021, 19:07
Last modified:03 Aug 2024, 21:33

Vulnerability Summary

Overall Risk (default)
medium
29/100
CVSS Score
7.1 HIGH
v3.1 (nvd)
EPSS Score
3.42% LOW
3% probability +3.12%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Mar 2021, 19:07
Published
Vulnerability first disclosed
03 Aug 2024, 21:33
Last Modified
Vulnerability information updated

Description

ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 4.6AV:N/AC:H/Au:S/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 3.42%• Percentile: 88%

Techniques & Countermeasures

  • CWE-415•Double Free

    The product calls free() twice on the same memory address.

Affected Systems

  • alpine•openssh

    ≥ 8.2, < 8.3_p1-r2 | ≥ 8.2, < 8.4_p1-r1 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0 | ≥ 8.2, < 8.5_p1-r0

  • debian•openssh

    < 1:8.4p1-5 | < 1:8.4p1-5 | < 1:8.4p1-5 | < 1:8.4p1-5

  • fedoraproject•fedora

    33 | 34

  • netapp•cloud_backup

    na

  • netapp•hci_compute_node

    na

  • netapp•hci_management_node

    na

  • netapp•hci_storage_node_bios

    na

  • netapp•solidfire

    na

  • openbsd•openssh

    ≥ 8.2, < 8.5

  • oracle•communications_offline_mediation_controller

    12.0.0.3.0

  • oracle•zfs_storage_appliance

    8.8

References (11)