Amazon Linux 2 Security Advisory: ALAS-2025-2750
Advisory Release Date: 2025-01-30 22:56 Pacific
Advisory Updated Date: 2025-02-04 11:02 Pacific
Issue summary: A timing side-channel which could potentially allow recovering
the private key exists in the ECDSA signature computation.
Impact summary: A timing side-channel in ECDSA signature computations
could allow recovering the private key by an attacker. However, measuring
the timing would require either local access to the signing application or
a very fast network connection with low latency.
There is a timing signal of around 300 nanoseconds when the top word of
the inverted ECDSA nonce value is zero. This can happen with significant
probability only for some of the supported elliptic curves. In particular
the NIST P-521 curve is affected. To be able to measure this leak, the attacker
process must either be located in the same physical computer or must
have a very fast network connection with low latency. For that reason
the severity of this vulnerability is Low. (CVE-2024-13176)
Affected Packages:
edk2
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update edk2 to update your system.
aarch64:
edk2-tools-20240813-298.amzn2.aarch64
edk2-debuginfo-20240813-298.amzn2.aarch64
noarch:
edk2-ovmf-20240813-298.amzn2.noarch
edk2-tools-doc-20240813-298.amzn2.noarch
edk2-aarch64-20240813-298.amzn2.noarch
src:
edk2-20240813-298.amzn2.src
x86_64:
edk2-tools-20240813-298.amzn2.x86_64
edk2-debuginfo-20240813-298.amzn2.x86_64