Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU61391
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2022-0778
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the BN_mod_sqrt() function when processing an ASN.1 certificate that contains elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. A remote attacker can supply a specially crafted certificate to the TLS server or client, consume all available system resources and cause denial of service conditions.
MitigationUpdate the affected package openssl to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server: 11-SP4-LTSS-EXTREME-CORE
SUSE Linux Enterprise Point of Sale: 11-SP3
SUSE Linux Enterprise Debuginfo: 11-SP3 - 11-SP4
openssl-debugsource: before 0.9.8j-0.106.46.1
openssl-debuginfo: before 0.9.8j-0.106.46.1
libopenssl-devel: before 0.9.8j-0.106.46.1
libopenssl0_9_8-hmac-32bit: before 0.9.8j-0.106.46.1
libopenssl0_9_8-32bit: before 0.9.8j-0.106.46.1
openssl-doc: before 0.9.8j-0.106.46.1
openssl: before 0.9.8j-0.106.46.1
libopenssl0_9_8-hmac: before 0.9.8j-0.106.46.1
libopenssl0_9_8: before 0.9.8j-0.106.46.1
CPE2.3http://www.suse.com/support/update/announcement/2022/suse-su-202214915-1/
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. However, proof of concept for this vulnerability is available.