Xpdf /xpdf/Lexer.cc Lexer::getObj 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

Summaryinfo

A vulnerability marked as critical has been reported in Xpdf. This impacts the function Lexer::getObj of the file /xpdf/Lexer.cc. The manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2022-38236. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Xpdf (Document Reader Software) (the affected version is unknown). It has been rated as critical. This issue affects the function Lexer::getObj of the file /xpdf/Lexer.cc. 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. The summary by CVE is:

XPDF commit ffaf11c was discovered to contain a global-buffer overflow via Lexer::getObj(Object*) at /xpdf/Lexer.cc.

The weakness was disclosed 08/17/2022. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-38236 since 08/15/2022. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing 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.

Be aware that VulDB is the high quality source for 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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Partially
Local: Yes
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: github.com
Status: Confirmed

CVE: CVE-2022-38236 (🔍)
GCVE (CVE): GCVE-0-2022-38236
GCVE (VulDB): GCVE-100-206567

Entryinfo

Created: 08/17/2022 09:39
Updated: 09/17/2022 10:38
Changes: 08/17/2022 09:39 (38), 09/17/2022 10:38 (11)
Complete: 🔍
Cache ID: 216::103

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