Ubuntu update for htmldoc



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-23165
CWE-ID CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
Ubuntu
Operating systems & Components / Operating system

htmldoc-common (Ubuntu package)
Operating systems & Components / Operating system package or component

htmldoc (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU54035

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-23165

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the pspdf_prepare_outpages() function in ps-pdf.cxx. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and crash the library.


Mitigation

Update the affected package htmldoc to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 20.04

htmldoc-common (Ubuntu package): before 1.9.2-1ubuntu0.2

htmldoc (Ubuntu package): before 1.9.2-1ubuntu0.2

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5438-1


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.



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