Xpdf /xpdf/Stream.cc DCTStream::lookChar 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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7.0$0-$5k0.00

A vulnerability classified as critical was found in Xpdf (Document Reader Software) (version now known). Affected by this vulnerability is the function DCTStream::lookChar of the file /xpdf/Stream.cc. 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 summary by CVE is:

XPDF commit ffaf11c was discovered to contain a heap-buffer overflow via DCTStream::lookChar() at /xpdf/Stream.cc.

The weakness was shared 08/17/2022 as 15. The advisory is shared at github.com. This vulnerability is known as CVE-2022-38238 since 08/15/2022. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/17/2022).

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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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: 🔍

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/15/2022 🔍
08/17/2022 +2 days 🔍
08/17/2022 +0 days 🔍
09/17/2022 +31 days 🔍

Sourcesinfo

Advisory: 15
Status: Confirmed

CVE: CVE-2022-38238 (🔍)
GCVE: GCVE-0-2022-38238

Entryinfo

Created: 08/17/2022 10:04 AM
Updated: 09/17/2022 10:43 AM
Changes: 08/17/2022 10:04 AM (39), 09/17/2022 10:43 AM (11)
Complete: 🔍
Cache ID: 18:7F9:40

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