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Debian Security Advisory 4963-1

Debian Security Advisory 4963-1
Posted Aug 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4963-1 - Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2021-3711, CVE-2021-3712
SHA-256 | 7f1c8fe693e955cee08270c3932882796ea0d36a94ccf9ffa0552f25e4502d26

Debian Security Advisory 4963-1

Change Mirror Download
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- -------------------------------------------------------------------------
Debian Security Advisory DSA-4963-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
August 24, 2021 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : openssl
CVE ID : CVE-2021-3711 CVE-2021-3712

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

CVE-2021-3711

John Ouyang reported a buffer overflow vulnerability in the SM2
decryption. An attacker able to present SM2 content for
decryption to an application can take advantage of this flaw to
change application behaviour or cause the application to crash
(denial of service).

CVE-2021-3712

Ingo Schwarze reported a buffer overrun flaw when processing ASN.1
strings in the X509_aux_print() function, which can result in denial
of service.

Additional details can be found in the upstream advisory:
https://www.openssl.org/news/secadv/20210824.txt

For the oldstable distribution (buster), these problems have been fixed
in version 1.1.1d-0+deb10u7.

For the stable distribution (bullseye), these problems have been fixed in
version 1.1.1k-1+deb11u1.

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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