The remote Debian 10 / 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5103 advisory.

  - There is a carry propagation bug in the MIPS32 and MIPS64 squaring procedure. Many EC algorithms are     affected, including some of the TLS 1.3 default curves. Impact was not analyzed in detail, because the     pre-requisites for attack are considered unlikely and include reusing private keys. Analysis suggests that     attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not     believed likely. Attacks against DH are considered just feasible (although very difficult) because most of     the work necessary to deduce information about a private key may be performed offline. The amount of     resources required for such an attack would be significant. However, for an attack on TLS to be     meaningful, the server would have to share the DH private key among multiple clients, which is no longer     an option since CVE-2016-0701. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0.0. It was     addressed in the releases of 1.1.1m and 3.0.1 on the 15th of December 2021. For the 1.0.2 release it is     addressed in git commit 6fc1aaaf3 that is available to premium support customers only. It will be made     available in 1.0.2zc when it is released. The issue only affects OpenSSL on MIPS platforms. Fixed in     OpenSSL 3.0.1 (Affected 3.0.0). Fixed in OpenSSL 1.1.1m (Affected 1.1.1-1.1.1l). Fixed in OpenSSL 1.0.2zc-     dev (Affected 1.0.2-1.0.2zb). (CVE-2021-4160)

  - The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop     forever for non-prime moduli. Internally this function is used when parsing certificates that contain     elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point     encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has     invalid explicit curve parameters. Since certificate parsing happens prior to verification of the     certificate signature, any process that parses an externally supplied certificate may thus be subject to a     denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they     can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients     consuming server certificates - TLS servers consuming client certificates - Hosting providers taking     certificates or private keys from customers - Certificate authorities parsing certification requests from     subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that     use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS     issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate     which makes it slightly harder to trigger the infinite loop. However any operation which requires the     public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-     signed certificate to trigger the loop during verification of the certificate signature. This issue     affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the     15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected     1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc). (CVE-2022-0778)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

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Debian DSA-5103-1 : openssl - security update

medium Nessus Plugin ID 158979

Version 1.4