USN-5051-3: OpenSSL vulnerability
26 August 2021
OpenSSL could be made to crash or expose sensitive information if it received a specially crafted ASN.1 string.
Releases
Packages
- openssl1.0 - Secure Socket Layer (SSL) cryptographic library and tools
Details
USN-5051-1 fixed a vulnerability in OpenSSL. This update provides the
corresponding update for the openssl1.0 package in Ubuntu 18.04 LTS.
Original advisory details:
Ingo Schwarze discovered that OpenSSL incorrectly handled certain ASN.1
strings. A remote attacker could use this issue to cause OpenSSL to crash,
resulting in a denial of service, or possibly obtain sensitive information.
(CVE-2021-3712)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04
After a standard system update you need to reboot your computer to make
all the necessary changes.
References
Related notices
- USN-5051-1: libssl-dev, openssl, libssl-doc, libssl1.1
- USN-5051-2: libssl1.0.0, libssl-dev, openssl, libssl-doc
- USN-5088-1: qemu-efi, edk2, qemu-efi-arm, qemu-efi-aarch64, ovmf, ovmf-ia32