htmldoc up to 1.9.11 ps-pdf.cxx pspdf_prepare_outpages heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability was found in htmldoc up to 1.9.11. It has been declared as critical. The impacted element is the function pspdf_prepare_outpages of the file ps-pdf.cxx. Executing a manipulation can lead to heap-based overflow. The identification of this vulnerability is CVE-2021-23165. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in htmldoc up to 1.9.11. It has been declared as critical. This vulnerability affects the function pspdf_prepare_outpages of the file ps-pdf.cxx. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is 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(). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 03/17/2022 as 413. The advisory is available at github.com. This vulnerability was named CVE-2021-23165 since 04/06/2021. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

Upgrading to version 1.9.12 eliminates this vulnerability. Applying the patch 6e8a95561988500b5b5ae4861b3b0cbf4fba517f is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: htmldoc 1.9.12
Patch: 6e8a95561988500b5b5ae4861b3b0cbf4fba517f

Timelineinfo

04/06/2021 🔍
03/17/2022 +345 days 🔍
03/17/2022 +0 days 🔍
02/05/2025 +1056 days 🔍

Sourcesinfo

Advisory: 413
Status: Confirmed

CVE: CVE-2021-23165 (🔍)
GCVE (CVE): GCVE-0-2021-23165
GCVE (VulDB): GCVE-100-195334

Entryinfo

Created: 03/17/2022 08:33
Updated: 02/05/2025 21:40
Changes: 03/17/2022 08:33 (42), 03/19/2022 17:52 (1), 02/05/2025 21:40 (33)
Complete: 🔍
Cache ID: 216::103

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