SUSE update for openssl

Published: 2021-03-19

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-23840 CVE-2021-23841
CWE-ID	CWE-20 CWE-476
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE Linux Enterprise Point of Sale Operating systems & Components / Operating system SUSE Linux Enterprise Debuginfo Operating systems & Components / Operating system openssl-debugsource Operating systems & Components / Operating system package or component openssl-debuginfo Operating systems & Components / Operating system package or component libopenssl-devel Operating systems & Components / Operating system package or component libopenssl0_9_8-hmac-32bit Operating systems & Components / Operating system package or component libopenssl0_9_8-32bit Operating systems & Components / Operating system package or component openssl-doc Operating systems & Components / Operating system package or component openssl Operating systems & Components / Operating system package or component libopenssl0_9_8-hmac Operating systems & Components / Operating system package or component libopenssl0_9_8 Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU50745

Risk: Medium

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

CVE-ID: CVE-2021-23840

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input during EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate calls. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package openssl to the latest version.

Vulnerable software versions

SUSE 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-0.106.37.1

openssl-debuginfo: before 0.9.8j-0.106.37.1

libopenssl-devel: before 0.9.8j-0.106.37.1

libopenssl0_9_8-hmac-32bit: before 0.9.8j-0.106.37.1

libopenssl0_9_8-32bit: before 0.9.8j-0.106.37.1

openssl-doc: before 0.9.8j-0.106.37.1

openssl: before 0.9.8j-0.106.37.1

libopenssl0_9_8-hmac: before 0.9.8j-0.106.37.1

libopenssl0_9_8: before 0.9.8j-0.106.37.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-202114670-1/

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.

2) NULL pointer dereference

EUVDB-ID: #VU50740