SUSE update for glibc

Published: 2021-10-06

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-33574 CVE-2021-35942
CWE-ID	CWE-416 CWE-190
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE OpenStack Cloud Crowbar Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system HPE Helion Openstack Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE OpenStack Cloud Operating systems & Components / Operating system nscd-debuginfo Operating systems & Components / Operating system package or component nscd Operating systems & Components / Operating system package or component glibc-profile-32bit Operating systems & Components / Operating system package or component glibc-profile Operating systems & Components / Operating system package or component glibc-locale-debuginfo-32bit Operating systems & Components / Operating system package or component glibc-locale-debuginfo Operating systems & Components / Operating system package or component glibc-locale-32bit Operating systems & Components / Operating system package or component glibc-locale Operating systems & Components / Operating system package or component glibc-devel-debuginfo-32bit Operating systems & Components / Operating system package or component glibc-devel-debuginfo Operating systems & Components / Operating system package or component glibc-devel-32bit Operating systems & Components / Operating system package or component glibc-devel Operating systems & Components / Operating system package or component glibc-debugsource Operating systems & Components / Operating system package or component glibc-debuginfo-32bit Operating systems & Components / Operating system package or component glibc-debuginfo Operating systems & Components / Operating system package or component glibc-32bit Operating systems & Components / Operating system package or component glibc Operating systems & Components / Operating system package or component glibc-info Operating systems & Components / Operating system package or component glibc-i18ndata Operating systems & Components / Operating system package or component glibc-html Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU54560

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33574

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the mq_notify() function in the GNU C Library. A remote attacker can force the library to use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service or possibly remote code execution.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected package glibc to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8

SUSE Linux Enterprise Server for SAP: 12-SP3

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP3-LTSS

SUSE OpenStack Cloud: 8

nscd-debuginfo: before 2.22-116.1

nscd: before 2.22-116.1

glibc-profile-32bit: before 2.22-116.1

glibc-profile: before 2.22-116.1

glibc-locale-debuginfo-32bit: before 2.22-116.1

glibc-locale-debuginfo: before 2.22-116.1

glibc-locale-32bit: before 2.22-116.1

glibc-locale: before 2.22-116.1

glibc-devel-debuginfo-32bit: before 2.22-116.1

glibc-devel-debuginfo: before 2.22-116.1

glibc-devel-32bit: before 2.22-116.1

glibc-devel: before 2.22-116.1

glibc-debugsource: before 2.22-116.1

glibc-debuginfo-32bit: before 2.22-116.1

glibc-debuginfo: before 2.22-116.1

glibc-32bit: before 2.22-116.1

glibc: before 2.22-116.1

glibc-info: before 2.22-116.1

glibc-i18ndata: before 2.22-116.1

glibc-html: before 2.22-116.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213289-1/

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) Integer overflow

EUVDB-ID: #VU55972

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-35942

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information or perform a DoS attack.

The vulnerability exists due to integer overflow in parse_param in posix/wordexp.c in the GNU C Library when called with an untrusted pattern. A remote attacker can pass specially crafted data to the application, trigger integer overflow and read arbitrary memory on the system of perform a denial of service (DoS) attack.

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

Mitigation

Update the affected package glibc to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8

SUSE Linux Enterprise Server for SAP: 12-SP3

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP3-LTSS

SUSE OpenStack Cloud: 8

nscd-debuginfo: before 2.22-116.1

nscd: before 2.22-116.1

glibc-profile-32bit: before 2.22-116.1

glibc-profile: before 2.22-116.1

glibc-locale-debuginfo-32bit: before 2.22-116.1

glibc-locale-debuginfo: before 2.22-116.1

glibc-locale-32bit: before 2.22-116.1

glibc-locale: before 2.22-116.1

glibc-devel-debuginfo-32bit: before 2.22-116.1

glibc-devel-debuginfo: before 2.22-116.1

glibc-devel-32bit: before 2.22-116.1

glibc-devel: before 2.22-116.1

glibc-debugsource: before 2.22-116.1

glibc-debuginfo-32bit: before 2.22-116.1

glibc-debuginfo: before 2.22-116.1

glibc-32bit: before 2.22-116.1

glibc: before 2.22-116.1

glibc-info: before 2.22-116.1

glibc-i18ndata: before 2.22-116.1

glibc-html: before 2.22-116.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213289-1/

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.