Headline
Debian Security Advisory 5560-1
Debian Linux Security Advisory 5560-1 - Florian Picca reported a bug the charon-tkm daemon in strongSwan an IKE/IPsec suite.
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Debian Security Advisory DSA-5560-1 [email protected]
https://www.debian.org/security/ Yves-Alexis Perez
November 20, 2023 https://www.debian.org/security/faq
Package : strongswan
CVE ID : CVE-2023-41913
Florian Picca reported a bug the charon-tkm daemon in strongSwan an IKE/IPsec
suite.
The TKM-backed version of the charon IKE daemon (charon-tkm) doesn’t
check the length of received Diffie-Hellman public values before copying
them to a fixed-size buffer on the stack, causing a buffer overflow that
could potentially be exploited for remote code execution by sending a
specially crafted and unauthenticated IKE_SA_INIT message.
For the oldstable distribution (bullseye), this problem has been fixed
in version 5.9.1-1+deb11u4.
For the stable distribution (bookworm), this problem has been fixed in
version 5.9.8-5+deb12u1.
We recommend that you upgrade your strongswan packages.
For the detailed security status of strongswan please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/strongswan
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
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Related news
Ubuntu Security Notice 6488-2 - USN-6488-1 fixed a vulnerability in strongSwan. This update provides the corresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Florian Picca discovered that strongSwan incorrectly handled certain DH public values. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code.
strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is 5.3.0. An attack can occur via a crafted IKE_SA_INIT message.
Ubuntu Security Notice 6488-1 - Florian Picca discovered that strongSwan incorrectly handled certain DH public values. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code.