[ASA-201812-8] openssl-1.0: private key recovery
Jelle van der Waa
jelle at archlinux.org
Tue Dec 11 17:20:20 UTC 2018
Arch Linux Security Advisory ASA-201812-8
Date : 2018-12-08
CVE-ID : CVE-2018-0734 CVE-2018-5407
Package : openssl-1.0
Type : private key recovery
Remote : Yes
Link : https://security.archlinux.org/AVG-807
The package openssl-1.0 before version 1.0.2.q-1 is vulnerable to
private key recovery.
Upgrade to 1.0.2.q-1.
# pacman -Syu "openssl-1.0>=1.0.2.q-1"
The problems have been fixed upstream in version 1.0.2.q.
- CVE-2018-0734 (private key recovery)
A timing vulnerability has been found in DSA signature generation in
openssl versions up to and including 1.1.1, where information is leaked
via a side channel when a BN is resized and could lead to private key
- CVE-2018-5407 (private key recovery)
A vulnerability has been found in the ECC scalar multiplication
implementation of OpenSSL < 1.1.0i and <= 1.0.2p. The implementation,
used in e.g. ECDSA and ECDH, has been shown
to be vulnerable to a microarchitecture timing side channel attack. An
attacker with sufficient access to mount local timing attacks during
ECDSA signature generation could recover the private key.
A remote attacker might be able to recover a private DSA key via a
timing attack. In addition, a local attacker might be able to recover a
private ECC key via a timing attack.
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