CVE-2021-28041

HIGH

ssh-agent <8.5 - Use After Free

Title source: llm

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.

References (9)

[Patch, Third Party Advisory] https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568db

View Patch ZIP pw:eip

[Third Party Advisory] https://security.gentoo.org/glsa/202105-35

[Third Party Advisory] https://security.netapp.com/advisory/ntap-20210416-0002/

[Not Applicable, Vendor Advisory] https://www.openssh.com/security.html

[Release Notes, Vendor Advisory] https://www.openssh.com/txt/release-8.5

[Mailing List, Patch, Third Party Advisory] https://www.openwall.com/lists/oss-security/2021/03/03/1

[Third Party Advisory] https://www.oracle.com//security-alerts/cpujul2021.html

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQWGII3LQR4AOTPPFXGMTYE7UDEWIUKI/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXST2CML2MWY3PNVUXX7FFJE3ATJMNVZ/

Scores

CVSS v3 7.1

EPSS 0.0024

EPSS Percentile 46.8%

Attack Vector NETWORK

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

Classification

CWE

CWE-415

Status published

Affected Products (10)

fedoraproject/fedora

openbsd/openssh < 8.5

fedoraproject/fedora

netapp/cloud_backup

netapp/hci_management_node

netapp/solidfire

netapp/hci_compute_node_firmware

netapp/hci_storage_node_firmware

oracle/communications_offline_mediation_controller

oracle/zfs_storage_appliance

Timeline

Published Mar 05, 2021

Tracked Since Feb 18, 2026