htmldoc 1.9.12 ps-pdf.cxx pspdf_prepare_page heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in htmldoc 1.9.12. Affected by this issue is the function pspdf_prepare_page of the file ps-pdf.cxx. The manipulation results in heap-based overflow. This vulnerability was named CVE-2021-26252. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in htmldoc 1.9.12. Affected is the function pspdf_prepare_page of the file ps-pdf.cxx. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 02/25/2022. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2021-26252 since 04/06/2021. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 213544 (Ubuntu 14.04 LTS / 18.04 LTS / 20.04 LTS : HTMLDOC vulnerabilities (USN-7189-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (213544). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 213544
Nessus Name: Ubuntu 14.04 LTS / 18.04 LTS / 20.04 LTS : HTMLDOC vulnerabilities (USN-7189-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/06/2021 🔍
02/25/2022 +325 days 🔍
02/25/2022 +0 days 🔍
05/01/2025 +1161 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2021-26252 (🔍)
GCVE (CVE): GCVE-0-2021-26252
GCVE (VulDB): GCVE-100-193788

Entryinfo

Created: 02/25/2022 12:13
Updated: 05/01/2025 18:25
Changes: 02/25/2022 12:13 (37), 02/28/2022 08:24 (1), 01/08/2025 12:32 (16), 05/01/2025 18:25 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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