Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU83316
Risk: Medium
CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-5981
CWE-ID:
CWE-208 - Information Exposure Through Timing Discrepancy
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform timing attack.
The vulnerability exists due to the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding. A remote attacker can perform timing sidechannel attack in RSA-PSK key exchange.
MitigationUpdate the affected package gnutls to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Micro for Rancher: 5.2
SUSE Linux Enterprise Server for SAP Applications 15: SP2 - SP3
SUSE Linux Enterprise Server 15 SP3 LTSS: 15-SP3
SUSE Linux Enterprise Server 15: SP2 - SP3
SUSE Linux Enterprise Server 15 SP2 LTSS: 15-SP2
SUSE Linux Enterprise High Performance Computing LTSS 15: SP3
SUSE Linux Enterprise High Performance Computing ESPOS 15: SP3
SUSE Linux Enterprise High Performance Computing 15: SP2 - SP3
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS: 15-SP2
SUSE Enterprise Storage: 7.1
SUSE Linux Enterprise Micro: 5.1 - 5.2
libgnutls-devel-32bit: before 3.6.7-150200.14.28.1
libgnutls30-hmac-32bit: before 3.6.7-150200.14.28.1
libgnutls30-32bit-debuginfo: before 3.6.7-150200.14.28.1
libgnutls30-32bit: before 3.6.7-150200.14.28.1
libgnutls30-hmac: before 3.6.7-150200.14.28.1
libgnutls30: before 3.6.7-150200.14.28.1
gnutls-debugsource: before 3.6.7-150200.14.28.1
gnutls-debuginfo: before 3.6.7-150200.14.28.1
libgnutlsxx28-debuginfo: before 3.6.7-150200.14.28.1
libgnutls-devel: before 3.6.7-150200.14.28.1
libgnutlsxx28: before 3.6.7-150200.14.28.1
libgnutls30-debuginfo: before 3.6.7-150200.14.28.1
gnutls: before 3.6.7-150200.14.28.1
libgnutlsxx-devel: before 3.6.7-150200.14.28.1
External linkshttp://www.suse.com/support/update/announcement/2023/suse-su-20234986-1/
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.