SUSE update for openssl

1) Information Exposure Through Timing Discrepancy

EUVDB-ID: #VU71993

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4304

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain sensitive information.

The vulnerability exists due to a timing based side channel exists in the OpenSSL RSA Decryption implementation. A remote attacker can perform a Bleichenbacher style attack and decrypt data sent over the network.

To achieve a successful decryption an attacker would have to be able to send a very large number of trial messages for decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5, RSA-OEAP and RSASVE.

Mitigation

Update the affected package openssl to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 12 SP2 BCL: 12-SP2

SUSE Linux Enterprise Server 12: SP2

SUSE Linux Enterprise High Performance Computing 12: SP2

openssl-doc: before 1.0.2j-60.98.1

libopenssl-devel: before 1.0.2j-60.98.1

openssl-debuginfo: before 1.0.2j-60.98.1

openssl: before 1.0.2j-60.98.1

libopenssl1_0_0-hmac: before 1.0.2j-60.98.1

libopenssl1_0_0-32bit: before 1.0.2j-60.98.1

openssl-debugsource: before 1.0.2j-60.98.1

libopenssl1_0_0: before 1.0.2j-60.98.1

libopenssl1_0_0-debuginfo: before 1.0.2j-60.98.1

libopenssl1_0_0-hmac-32bit: before 1.0.2j-60.98.1

libopenssl1_0_0-debuginfo-32bit: before 1.0.2j-60.98.1

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20232634-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.