Test ID:	1.3.6.1.4.1.25623.1.0.892788
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-2788-1)
Summary:	The remote host is missing an update for the Debian 'strongswan' package(s) announced via the DLA-2788-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'strongswan' package(s) announced via the DLA-2788-1 advisory. Vulnerability Insight: Researchers at the United States of America National Security Agency (NSA) identified a denial of services vulnerability in strongSwan, an IKE/IPsec suite. Once the in-memory certificate cache is full it tries to randomly replace lesser used entries. Depending on the generated random value, this could lead to an integer overflow that results in a double-dereference and a call using out-of-bounds memory that most likely leads to a segmentation fault. Remote code execution can't be ruled out completely, but attackers have no control over the dereferenced memory, so it seems unlikely at this point. For Debian 9 stretch, this problem has been fixed in version 5.5.1-4+deb9u5. We recommend that you upgrade your strongswan packages. For the detailed security status of strongswan please refer to its security tracker page at: [link moved to references] Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references] Affected Software/OS: 'strongswan' package(s) on Debian 9. Solution: Please install the updated package(s). CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-41991 Debian Security Information: DSA-4989 (Google Search) https://www.debian.org/security/2021/dsa-4989 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5FJSATD2R2XHTG4P63GCMQ2N7EWKMME5/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y3TQ32JLJOBJDB2EJKSX2PBPB5NFG2D4/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQSQ3BEC22NF4NCDZVCT4P3Q2ZIAJXGJ/ https://github.com/strongswan/strongswan/releases/tag/5.9.4 https://lists.debian.org/debian-lts-announce/2021/10/msg00014.html
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