Amazon Linux 2 Security Advisory: ALAS2OPENSSL-SNAPSAFE-2025-007
Advisory Released Date: 2025-03-06
Advisory Updated Date: 2025-03-06
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:
openssl-snapsafe
Note:
This advisory is applicable to Amazon Linux 2 - Openssl-snapsafe Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update openssl-snapsafe to update your system.
aarch64:
openssl-snapsafe-1.0.2k-24.amzn2.0.15.aarch64
openssl-snapsafe-libs-1.0.2k-24.amzn2.0.15.aarch64
openssl-snapsafe-devel-1.0.2k-24.amzn2.0.15.aarch64
openssl-snapsafe-static-1.0.2k-24.amzn2.0.15.aarch64
openssl-snapsafe-perl-1.0.2k-24.amzn2.0.15.aarch64
openssl-snapsafe-debuginfo-1.0.2k-24.amzn2.0.15.aarch64
i686:
openssl-snapsafe-1.0.2k-24.amzn2.0.15.i686
openssl-snapsafe-libs-1.0.2k-24.amzn2.0.15.i686
openssl-snapsafe-devel-1.0.2k-24.amzn2.0.15.i686
openssl-snapsafe-static-1.0.2k-24.amzn2.0.15.i686
openssl-snapsafe-perl-1.0.2k-24.amzn2.0.15.i686
openssl-snapsafe-debuginfo-1.0.2k-24.amzn2.0.15.i686
src:
openssl-snapsafe-1.0.2k-24.amzn2.0.15.src
x86_64:
openssl-snapsafe-1.0.2k-24.amzn2.0.15.x86_64
openssl-snapsafe-libs-1.0.2k-24.amzn2.0.15.x86_64
openssl-snapsafe-devel-1.0.2k-24.amzn2.0.15.x86_64
openssl-snapsafe-static-1.0.2k-24.amzn2.0.15.x86_64
openssl-snapsafe-perl-1.0.2k-24.amzn2.0.15.x86_64
openssl-snapsafe-debuginfo-1.0.2k-24.amzn2.0.15.x86_64