PoDoFo 0.9.6 PDF Document GetObject null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in PoDoFo 0.9.6. Impacted is the function GetObject of the component PDF Document Handler. Such manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2018-20751. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in PoDoFo 0.9.6 (Document Reader Software). It has been rated as problematic. Affected by this issue is the function GetObject of the component PDF Document Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

An issue was discovered in crop_page in PoDoFo 0.9.6. For a crafted PDF document, pPage->GetObject()->GetDictionary().AddKey(PdfName("MediaBox"),var) can be problematic due to the function GetObject() being called for the pPage NULL pointer object. The value of pPage at this point is 0x0, which causes a NULL pointer dereference.

The bug was discovered 11/19/2018. The weakness was shared 02/04/2019. This vulnerability is handled as CVE-2018-20751 since 02/04/2019. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 77 days. During that time the estimated underground price was around $0-$5k.

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

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Productinfo

Type

Name

Version

License

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: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/19/2018 🔍
02/04/2019 +77 days 🔍
02/04/2019 +0 days 🔍
02/05/2019 +1 days 🔍
07/04/2023 +1610 days 🔍

Sourcesinfo

Advisory: 33
Status: Not defined

CVE: CVE-2018-20751 (🔍)
GCVE (CVE): GCVE-0-2018-20751
GCVE (VulDB): GCVE-100-130454

Entryinfo

Created: 02/05/2019 08:54
Updated: 07/04/2023 15:54
Changes: 02/05/2019 08:54 (54), 05/07/2020 17:43 (1), 07/04/2023 15:54 (4)
Complete: 🔍
Cache ID: 216::103

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