Amazon Linux AMI update for zlib



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-45853
CWE-ID CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

zlib
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU82299

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45853

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 within the zipOpenNewFileInZip4_64() function from MiniZip. A remote attacker can create a specially crafted archive, trick the victim into opening it, 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 packages:

aarch64:
    zlib-debugsource-1.2.11-33.amzn2023.0.5.aarch64
    minizip-compat-debuginfo-1.2.11-33.amzn2023.0.5.aarch64
    minizip-compat-1.2.11-33.amzn2023.0.5.aarch64
    zlib-devel-1.2.11-33.amzn2023.0.5.aarch64
    zlib-debuginfo-1.2.11-33.amzn2023.0.5.aarch64
    zlib-static-1.2.11-33.amzn2023.0.5.aarch64
    minizip-compat-devel-1.2.11-33.amzn2023.0.5.aarch64
    zlib-1.2.11-33.amzn2023.0.5.aarch64

src:
    zlib-1.2.11-33.amzn2023.0.5.src

x86_64:
    zlib-debugsource-1.2.11-33.amzn2023.0.5.x86_64
    zlib-debuginfo-1.2.11-33.amzn2023.0.5.x86_64
    minizip-compat-debuginfo-1.2.11-33.amzn2023.0.5.x86_64
    minizip-compat-devel-1.2.11-33.amzn2023.0.5.x86_64
    zlib-static-1.2.11-33.amzn2023.0.5.x86_64
    minizip-compat-1.2.11-33.amzn2023.0.5.x86_64
    zlib-devel-1.2.11-33.amzn2023.0.5.x86_64
    zlib-1.2.11-33.amzn2023.0.5.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

zlib: before 1.2.11-33

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-410.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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