SUSE update for mozilla-nss

1) Heap-based buffer overflow

EUVDB-ID: #VU58477

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-43527

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling DER-encoded DSA or RSA-PSS signatures. A remote attacker can send specially crafted signatures encoded within CMS, S/MIME, PKCS #7, or PKCS #12 to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package mozilla-nss to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Point of Sale: 11-SP3

SUSE Linux Enterprise Debuginfo: 11-SP3 - 11-SP4

SUSE Linux Enterprise Server: 11-SP4-LTSS

mozilla-nss-debuginfo: before 3.68.1-47.19.1

mozilla-nss-certs-32bit: before 3.68.1-47.19.1

mozilla-nss-32bit: before 3.68.1-47.19.1

libsoftokn3-32bit: before 3.68.1-47.19.1

libfreebl3-32bit: before 3.68.1-47.19.1

mozilla-nss-tools: before 3.68.1-47.19.1

mozilla-nss-devel: before 3.68.1-47.19.1

mozilla-nss-certs: before 3.68.1-47.19.1

mozilla-nss: before 3.68.1-47.19.1

libsoftokn3: before 3.68.1-47.19.1

libfreebl3: before 3.68.1-47.19.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_point_of_sale:11-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_debuginfo:11-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_debuginfo:11-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:11-SP4-LTSS:*:*:*:*:*:*:*
• cpe:2.3:a:suse:mozilla-nss-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:mozilla-nss-certs-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:mozilla-nss-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libsoftokn3-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libfreebl3-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:mozilla-nss-tools:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:mozilla-nss-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:mozilla-nss-certs:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:mozilla-nss:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libsoftokn3:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libfreebl3:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2021/suse-su-202114858-1/

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.