ASA-201812-7 log generated external raw
[ASA-201812-7] lib32-openssl-1.0: private key recovery |
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Arch Linux Security Advisory ASA-201812-7
=========================================
Severity: Low
Date : 2018-12-08
CVE-ID : CVE-2018-0734 CVE-2018-5407
Package : lib32-openssl-1.0
Type : private key recovery
Remote : Yes
Link : https://security.archlinux.org/AVG-806
Summary
=======
The package lib32-openssl-1.0 before version 1.0.2.q-1 is vulnerable to
private key recovery.
Resolution
==========
Upgrade to 1.0.2.q-1.
# pacman -Syu "lib32-openssl-1.0>=1.0.2.q-1"
The problems have been fixed upstream in version 1.0.2.q.
Workaround
==========
None.
Description
===========
- 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
recovery.
- 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.
Impact
======
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.
References
==========
https://www.openssl.org/news/secadv/20181030.txt
https://github.com/openssl/openssl/commit/8abfe72e8c1de1b95f50aa0d9134803b4d00070f
https://github.com/openssl/openssl/pull/7486
https://www.openssl.org/news/secadv/20181112.txt
https://github.com/openssl/openssl/commit/b18162a7c9bbfb57112459a4d6631fa258fd8c0c
https://security.archlinux.org/CVE-2018-0734
https://security.archlinux.org/CVE-2018-5407
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