PDFResurrect up to 0.19 Header Validation pdf_get_version 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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6.4$0-$5k0.00

A vulnerability has been found in PDFResurrect up to 0.19 and classified as critical. Affected by this vulnerability is the function pdf_get_version of the component Header Validation Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-122. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

PDFResurrect before 0.20 lack of header validation checks causes heap-buffer-overflow in pdf_get_version().

The weakness was disclosed 11/21/2020 as 14. The advisory is shared at github.com. This vulnerability is known as CVE-2020-20740 since 08/13/2020. The exploitation appears to be easy. The attack needs to be done within the local network. A single authentication is necessary for exploitation. Technical details are known, but no exploit is available.

Upgrading to version 0.20 eliminates this vulnerability. Applying a patch 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.

Productinfoedit

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CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2infoedit

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

NVD Base Score: 🔍

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-122
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PDFResurrect 0.20
Patch: github.com

Timelineinfoedit

08/13/2020 🔍
11/21/2020 +100 days 🔍
11/21/2020 +0 days 🔍
12/09/2020 +18 days 🔍

Sourcesinfoedit

Advisory: 14
Status: Confirmed

CVE: CVE-2020-20740 (🔍)

Entryinfoedit

Created: 11/21/2020 07:21 AM
Updated: 12/09/2020 05:33 PM
Changes: (18) vulnerability_cvss2_nvd_basescore vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss3_nvd_basescore vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a
Complete: 🔍

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