Double Free Affecting openssh package, versions <1:8.2p1-4ubuntu0.2
Threat Intelligence
EPSS
0.18% (56th
percentile)
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Test your applications- Snyk ID SNYK-UBUNTU2004-OPENSSH-1083821
- published 9 Mar 2021
- disclosed 5 Mar 2021
Introduced: 5 Mar 2021
CVE-2021-28041 Open this link in a new tabHow to fix?
Upgrade Ubuntu:20.04 openssh to version 1:8.2p1-4ubuntu0.2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-28041
- https://security.netapp.com/advisory/ntap-20210416-0002/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KQWGII3LQR4AOTPPFXGMTYE7UDEWIUKI/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TXST2CML2MWY3PNVUXX7FFJE3ATJMNVZ/
- https://security.gentoo.org/glsa/202105-35
- https://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568db
- https://www.openssh.com/security.html
- https://www.openssh.com/txt/release-8.5
- https://www.openwall.com/lists/oss-security/2021/03/03/1
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQWGII3LQR4AOTPPFXGMTYE7UDEWIUKI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXST2CML2MWY3PNVUXX7FFJE3ATJMNVZ/
CVSS Scores
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