USN-6709-1: OpenSSL vulnerabilities
21 March 2024
Several security issues were fixed in OpenSSL.
Releases
Packages
- openssl1.0 - Secure Socket Layer (SSL) cryptographic library and tools
Details
It was discovered that checking excessively long DH keys or parameters
may be very slow. A remote attacker could possibly use this issue to
cause OpenSSL to consume resources, resulting in a denial of service.
(CVE-2023-3446)
After the fix for CVE-2023-3446 Bernd Edlinger discovered that a large
q parameter value can also trigger an overly long computation during
some of these checks. A remote attacker could possibly use this issue
to cause OpenSSL to consume resources, resulting in a denial of
service. (CVE-2023-3817)
David Benjamin discovered that generating excessively long X9.42 DH
keys or checking excessively long X9.42 DH keys or parameters may be
very slow. A remote attacker could possibly use this issue to cause
OpenSSL to consume resources, resulting in a denial of service.
(CVE-2023-5678)
Bahaa Naamneh discovered that processing a maliciously formatted
PKCS12 file may lead OpenSSL to crash leading to a potential Denial of
Service attack. (CVE-2024-0727)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04
-
libssl1.0.0
-
1.0.2n-1ubuntu5.13+esm1
Available with Ubuntu Pro
After a standard system update you need to reboot your computer to make
all the necessary changes.