Poppler 0.72.0 XRef.cc XRef::getEntry PDF Document null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Poppler 0.72.0. It has been rated as problematic. This issue affects the function XRef::getEntry of the file XRef.cc. The manipulation as part of PDF Document leads to null pointer dereference. This vulnerability is traded as CVE-2018-20481. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Poppler 0.72.0 (Document Reader Software). It has been rated as problematic. This issue affects the function XRef::getEntry of the file XRef.cc. The manipulation as part of a PDF Document 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. The summary by CVE is:

XRef::getEntry in XRef.cc in Poppler 0.72.0 mishandles unallocated XRef entries, which allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted PDF document, when XRefEntry::setFlag in XRef.h is called from Parser::makeStream in Parser.cc.

The bug was discovered 12/25/2018. The weakness was shared 12/26/2018 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2018-20481 since 12/25/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 121334 (Fedora 29 : poppler (2019-7ff7f5093e)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197349 (Ubuntu Security Notification for Poppler Vulnerabilities (USN-3865-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (121334) and SecurityFocus (BID 106321†). The entries VDB-126426, VDB-128517 and VDB-128609 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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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Nessus ID: 121334
Nessus Name: Fedora 29 : poppler (2019-7ff7f5093e)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/25/2018 🔍
12/25/2018 +0 days 🔍
12/25/2018 +0 days 🔍
12/25/2018 +0 days 🔍
12/26/2018 +1 days 🔍
12/26/2018 +0 days 🔍
01/24/2019 +29 days 🔍
01/24/2019 +0 days 🔍
06/22/2023 +1610 days 🔍

Sourcesinfo

Advisory: FEDORA-2019-7ff7f5093e⛔
Status: Confirmed

CVE: CVE-2018-20481 (🔍)
GCVE (CVE): GCVE-0-2018-20481
GCVE (VulDB): GCVE-100-128429
SecurityFocus: 106321 - Poppler CVE-2018-20481 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/26/2018 21:20
Updated: 06/22/2023 08:43
Changes: 12/26/2018 21:20 (74), 05/26/2020 09:18 (5), 06/22/2023 08:40 (4), 06/22/2023 08:43 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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