QPDF up to 6.x QPDF_encryption.cc iterate_rc4 out-of-bounds

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3$0-$5k0.00

A vulnerability, which was classified as critical, has been found in QPDF up to 6.x. Affected by this issue is the function iterate_rc4 of the file QPDF_encryption.cc. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in QPDF before 7.0.0. There is a stack-based out-of-bounds read in the function iterate_rc4 in QPDF_encryption.cc.

The bug was discovered 08/23/2017. The weakness was shared 02/13/2018 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2017-18184 since 02/13/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 174 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 109600 (Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : qpdf vulnerabilities (USN-3638-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197126 (Ubuntu Security Notification for Qpdf Vulnerabilities (USN-3638-1)).

Upgrading to version 7.0.0 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (109600).

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 109600
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : qpdf vulnerabilities (USN-3638-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 62967
OpenVAS Name: Ubuntu Update for qpdf USN-3638-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: QPDF 7.0.0
Patch: github.com

Timelineinfo

08/23/2017 🔍
02/13/2018 +174 days 🔍
02/13/2018 +0 days 🔍
02/13/2018 +0 days 🔍
02/14/2018 +1 days 🔍
05/07/2018 +82 days 🔍
05/08/2018 +1 days 🔍
02/06/2023 +1735 days 🔍

Sourcesinfo

Advisory: USN-3638-1
Status: Not defined

CVE: CVE-2017-18184 (🔍)

Entryinfo

Created: 02/14/2018 08:19 AM
Updated: 02/06/2023 02:57 PM
Changes: 02/14/2018 08:19 AM (74), 01/04/2020 01:52 PM (2), 02/06/2023 02:51 PM (5), 02/06/2023 02:53 PM (1), 02/06/2023 02:57 PM (1)
Complete: 🔍
Cache ID: 44:775:40

Discussion

No comments yet. Languages: en.

Please log in to comment.

Want to stay up to date on a daily basis?

Enable the mail alert feature now!