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Debian Security Advisory 5417-1

Debian Security Advisory 5417-1
Posted May 31, 2023
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5417-1 - Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2023-0464, CVE-2023-0465, CVE-2023-0466, CVE-2023-2650
SHA-256 | 0562c60082b5ec1e7ee72e0195d29f8e00ba947650e8adc9a2c11de5a7962712

Debian Security Advisory 5417-1

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-5417-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
May 31, 2023 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : openssl
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 the stable distribution (bullseye), these problems have been fixed in
version 1.1.1n-0+deb11u5.

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 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: debian-security-announce@lists.debian.org
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