VDB-166802 · CVE-2020-35702 · GCVE-0-2020-35702

Poppler 20.12.1 PDF Document DCTStream.cc DCTStream::getChars heap-based overflow ⚔ [Disputed]

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	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.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Poppler 20.12.1. It has been declared as critical. This impacts the function DCTStream::getChars of the file DCTStream.cc of the component PDF Document Handler. Such manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2020-35702. No exploit exists. The real existence of this vulnerability is still doubted at the moment.

Detailsinfo

A vulnerability was found in Poppler 20.12.1 (Document Reader Software) and classified as critical. Affected by this issue is the function DCTStream::getChars of the file DCTStream.cc of the component PDF Document Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to 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(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

DCTStream::getChars in DCTStream.cc in Poppler 20.12.1 has a heap-based buffer overflow via a crafted PDF document. NOTE: later reports indicate that this only affects builds from Poppler git clones in late December 2020, not the 20.12.1 release. In this situation, it should NOT be considered a Poppler vulnerability. However, several third-party Open Source projects directly rely on Poppler git clones made at arbitrary times, and therefore the CVE remains useful to users of those projects

The weakness was disclosed 12/25/2020. The advisory is available at gitlab.freedesktop.org. This vulnerability is handled as CVE-2020-35702. Technical details are known, but there is no available exploit.

The real existence of this vulnerability is still doubted at the moment.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Document Reader Software

Name

Poppler

Version

20.12.1

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/25/2020 🔍
12/25/2020 +0 days 🔍
08/04/2024 +1318 days 🔍

Sourcesinfo

Advisory: gitlab.freedesktop.org
Status: Not defined
Disputed: 🔍

CVE: CVE-2020-35702 (🔍)
GCVE (CVE): GCVE-0-2020-35702
GCVE (VulDB): GCVE-100-166802

Entryinfo

Created: 12/25/2020 13:47
Updated: 08/04/2024 19:24
Changes: 12/25/2020 13:47 (38), 08/04/2024 19:24 (36)
Complete: 🔍
Cache ID: 216::103