[SECURITY] [DLA 3449-1] openssl security update

Debian LTS Advisory DLA-3449-1 [email protected]
https://www.debian.org/lts/security/ Sylvain Beucler
June 08, 2023 https://wiki.debian.org/LTS

Package : openssl
Version : 1.1.1n-0+deb10u5
CVE ID : CVE-2023-0464 CVE-2023-0465 CVE-2023-0466 CVE-2023-2650
Debian Bug : 1034720

Multiple vulnerabilities have been discovered in OpenSSL, a Secure
Sockets Layer toolkit.

CVE-2023-0464

David Benjamin reported a flaw related to the verification of
X.509 certificate chains that include policy constraints, which
may result in denial of service.

CVE-2023-0465

David Benjamin reported that invalid certificate policies in leaf
certificates are silently ignored. A malicious CA could take
advantage of this flaw to deliberately assert invalid certificate
policies in order to circumvent policy checking on the certificate
altogether.

CVE-2023-0466

David Benjamin discovered that the implementation of the
X509_VERIFY_PARAM_add0_policy() function does not enable the check
which allows certificates with invalid or incorrect policies to
pass the certificate verification (contrary to its documentation).

CVE-2023-2650

It was discovered that processing malformed ASN.1 object
identifiers or data may result in denial of service.

For Debian 10 buster, these problems have been fixed in version
1.1.1n-0+deb10u5.

We recommend that you upgrade your openssl packages.

For the detailed security status of openssl please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/openssl

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS