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While this particular vulnerability is only associated with a single version of OpenSSL (version 3.0.4), it isn’t enough to simply inventory (via, say, a legacy vulnerability management solution), whether a TLS/SSL server is running a vulnerable version of OpenSSL. Teams developing new implementations during this two-week window would have likely discovered this flaw on their own during normal functionality testing, as it results in a failed state readily observable by the developer or QA tester.
OPENSSL VULNERABILITY CODE
With no known proof of concept code or attacks in the wild, it is reasonable to say that this vulnerability, while receiving much initial attention (including an alert put out by CISA the very next day), is unlikely to see widespread exploitation. Many owners had probably not even gotten around to patching their version 3.0.3 (or prior) versions. As such, the maximum exposure for potential exploitation of this bug was only two weeks. An attacker could then perform RCE (Remote Code Execution) over the network against SSL/TLS and other OpenSSL servers that support x86_64 AVX512IFMA instructions.įortunately for owners of SSL/TLS servers, this issue has since been patched on 5 July 2022, in version 3.0.5 of OpenSSL. This allowed for memory corruption on RSA implementations running 2048-bit private keys. This is a record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.On 21 June 2022, OpenSSL version 3.0.4 introduced a severe bug (CVE-2022-2274) in the RSA implementation for X86_64 CPUs supporting AVX512IFMA instructions. Necessarily indicate when this vulnerability wasĭiscovered, shared with the affected vendor, publicly The CVE ID was allocated or reserved, and does not
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OPENSSL VULNERABILITY UPDATE
MLIST: 20210831 postgresql-9.6 security update.CISCO:20210325 Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2021.Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. OpenSSL 1.0.2 is not impacted by this issue.
OPENSSL VULNERABILITY UPGRADE
Users of these versions should upgrade to OpenSSL 1.1.1k. All OpenSSL 1.1.1 versions are affected by this issue.
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OpenSSL TLS clients are not impacted by this issue. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client.