Foo Labs Xpdf 4.00 readSymbolDictSeg encoding error

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Foo Labs Xpdf 4.00. Affected by this vulnerability is the function JBIG2Stream::readSymbolDictSeg. Such manipulation leads to encoding error. This vulnerability is listed as CVE-2018-7173. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Foo Labs Xpdf 4.00 (Document Reader Software). It has been rated as problematic. Affected by this issue is the function JBIG2Stream::readSymbolDictSeg. The manipulation with an unknown input leads to a encoding error vulnerability. Using CWE to declare the problem leads to CWE-172. The product does not properly encode or decode the data, resulting in unexpected values. Impacted is availability. CVE summarizes:

A large loop in JBIG2Stream::readSymbolDictSeg in xpdf 4.00 allows an attacker to cause denial of service via a specific file due to inappropriate decoding.

The bug was discovered 02/11/2018. The weakness was presented 02/15/2018 (Website). The advisory is available at forum.xpdfreader.com. This vulnerability is handled as CVE-2018-7173 since 02/15/2018. 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 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 232059 (Linux Distros Unpatched Vulnerability : CVE-2018-7173), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277720 (Fedora Security Update for xpdf (FEDORA-2019-b3aec99d2c)).

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

The vulnerability is also documented in the vulnerability database at Tenable (232059). See VDB-113499, VDB-113500, VDB-113791 and VDB-113793 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.9

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Encoding error
CWE: CWE-172
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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Nessus ID: 232059
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2018-7173

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/11/2018 🔍
02/15/2018 +4 days 🔍
02/15/2018 +0 days 🔍
02/15/2018 +0 days 🔍
02/16/2018 +1 days 🔍
03/07/2025 +2576 days 🔍

Sourcesinfo

Advisory: forum.xpdfreader.com
Status: Confirmed

CVE: CVE-2018-7173 (🔍)
GCVE (CVE): GCVE-0-2018-7173
GCVE (VulDB): GCVE-100-113498
See also: 🔍

Entryinfo

Created: 02/16/2018 13:03
Updated: 03/07/2025 09:20
Changes: 02/16/2018 13:03 (60), 06/17/2020 16:52 (1), 03/07/2025 09:20 (17)
Complete: 🔍
Cache ID: 216:090:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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