Amazon Linux AMI update for harfbuzz



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-45931
CWE-ID CWE-787
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

harfbuzz
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Out-of-bounds write

EUVDB-ID: #VU67642

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-45931

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input within the hb_bit_set_invertible_t::set() function. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Update the affected packages:

aarch64:
    harfbuzz-icu-2.9.1-1.amzn2023.0.3.aarch64
    harfbuzz-debuginfo-2.9.1-1.amzn2023.0.3.aarch64
    harfbuzz-icu-debuginfo-2.9.1-1.amzn2023.0.3.aarch64
    harfbuzz-devel-debuginfo-2.9.1-1.amzn2023.0.3.aarch64
    harfbuzz-2.9.1-1.amzn2023.0.3.aarch64
    harfbuzz-debugsource-2.9.1-1.amzn2023.0.3.aarch64
    harfbuzz-devel-2.9.1-1.amzn2023.0.3.aarch64

src:
    harfbuzz-2.9.1-1.amzn2023.0.3.src

x86_64:
    harfbuzz-debuginfo-2.9.1-1.amzn2023.0.3.x86_64
    harfbuzz-icu-debuginfo-2.9.1-1.amzn2023.0.3.x86_64
    harfbuzz-devel-debuginfo-2.9.1-1.amzn2023.0.3.x86_64
    harfbuzz-debugsource-2.9.1-1.amzn2023.0.3.x86_64
    harfbuzz-icu-2.9.1-1.amzn2023.0.3.x86_64
    harfbuzz-2.9.1-1.amzn2023.0.3.x86_64
    harfbuzz-devel-2.9.1-1.amzn2023.0.3.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

harfbuzz: All versions

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-036.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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