Summary
George Pantelakis and Alicja Kario discovered that OpenSSL had a timing
side-channel when performing ECDSA signature computations. A remote
attacker could possibly use this issue to recover private data.
(CVE-2024-13176)
It was discovered that OpenSSL incorrectly handled certain memory
operations when using low-level GF(2^m) elliptic curve APIs with untrusted
explicit values for the field polynomial. When being used in this uncommon
fashion, a remote attacker could use this issue to cause OpenSSL to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2024-9143)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | openssl | 1.1.1f-1ubuntu2.24 |
| Ubuntu · 22.04 LTS 22.04:LTS | openssl | 3.0.2-0ubuntu1.19 |
| Ubuntu · 24.04 LTS 24.04:LTS | openssl | 3.0.13-0ubuntu3.5 |
Vulnerabilities 2
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High 8.8CVE-2024-9143 EPSS 12%
Low-level invalid GF(2^m) parameters lead to OOB memory access
Issue summary: Use of the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial can lead to out-of-bounds memory reads or writes. Impact summary: Out of bound memory writes can lead to an application crash or even a pos…
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Medium 4.6CVE-2024-13176 Public exploit
Timing side-channel in ECDSA signature computation
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 attacke…