Amazon Linux AMI update for glibc

Published: 2022-04-08

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-23218 CVE-2022-23219
CWE-ID	CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU61294

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-23218

CWE-ID: CWE-119 - Memory corruption

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 within the svcunix_create() in the sunrpc module ib glibc. A remote attacker can pass specially crafted input to the application that is using the affected library version, trigger memory corruption 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 packages:

i686:
    nscd-2.17-324.189.amzn1.i686
    glibc-headers-2.17-324.189.amzn1.i686
    glibc-2.17-324.189.amzn1.i686
    glibc-utils-2.17-324.189.amzn1.i686
    glibc-debuginfo-2.17-324.189.amzn1.i686
    glibc-static-2.17-324.189.amzn1.i686
    glibc-devel-2.17-324.189.amzn1.i686
    glibc-debuginfo-common-2.17-324.189.amzn1.i686
    glibc-common-2.17-324.189.amzn1.i686

src:
    glibc-2.17-324.189.amzn1.src

x86_64:
    glibc-static-2.17-324.189.amzn1.x86_64
    glibc-debuginfo-2.17-324.189.amzn1.x86_64
    glibc-headers-2.17-324.189.amzn1.x86_64
    glibc-common-2.17-324.189.amzn1.x86_64
    glibc-utils-2.17-324.189.amzn1.x86_64
    glibc-2.17-324.189.amzn1.x86_64
    glibc-debuginfo-common-2.17-324.189.amzn1.x86_64
    glibc-devel-2.17-324.189.amzn1.x86_64
    nscd-2.17-324.189.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2022-1576.html

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) Buffer overflow

EUVDB-ID: #VU61295