Amazon Linux AMI update for expat



| Updated: 2022-09-21
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-23852
CWE-ID CWE-190
Exploitation vector Network
Public exploit N/A
Vulnerable software
Amazon Linux AMI
Operating systems & Components / Operating system

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Integer overflow

EUVDB-ID: #VU59966

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-2022-23852

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES. A remote attacker can pass specially crafted data to the application, trigger integer 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 packages:

i686:
    expat-2.1.0-12.25.amzn1.i686
    expat-devel-2.1.0-12.25.amzn1.i686
    expat-debuginfo-2.1.0-12.25.amzn1.i686

src:
    expat-2.1.0-12.25.amzn1.src

x86_64:
    expat-2.1.0-12.25.amzn1.x86_64
    expat-devel-2.1.0-12.25.amzn1.x86_64
    expat-debuginfo-2.1.0-12.25.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2022-1569.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.



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