Nokogiri 1.5.x/1.6.x XML Entity xml entity expansion

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

Summaryinfo

A vulnerability was found in Nokogiri 1.5.x/1.6.x and classified as problematic. Affected is an unknown function of the component XML Entity Handler. Executing a manipulation can lead to xml entity expansion. This vulnerability is handled as CVE-2013-6461. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Nokogiri 1.5.x/1.6.x. This vulnerability affects an unknown code of the component XML Entity Handler. The manipulation with an unknown input leads to a xml entity expansion vulnerability. The CWE definition for the vulnerability is CWE-776. The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities. As an impact it is known to affect availability. CVE summarizes:

Nokogiri gem 1.5.x and 1.6.x has DoS while parsing XML entities by failing to apply limits

The bug was discovered 12/14/2013. The weakness was released 11/05/2019 by Jonas Nicklas, Yoko Harada and John Shahid. This vulnerability was named CVE-2013-6461 since 11/04/2013. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 2152 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 64513†) and OSVDB (101458†). Entry connected to this vulnerability is available at VDB-144945. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Xml entity expansion
CWE: CWE-776
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/04/2013 🔍
12/14/2013 +40 days 🔍
12/24/2013 +10 days 🔍
11/05/2019 +2142 days 🔍
11/06/2019 +1 days 🔍
02/04/2024 +1551 days 🔍

Sourcesinfo

Advisory: openwall.com
Researcher: Jonas Nicklas, Yoko Harada, John Shahid
Status: Not defined

CVE: CVE-2013-6461 (🔍)
GCVE (CVE): GCVE-0-2013-6461
GCVE (VulDB): GCVE-100-144946
X-Force: 90059
SecurityFocus: 64513 - Ruby Nokogiri Gem XML Parsing Multiple Denial of Service Vulnerabilities
OSVDB: 101458

See also: 🔍

Entryinfo

Created: 11/06/2019 06:50
Updated: 02/04/2024 08:30
Changes: 11/06/2019 06:50 (40), 11/06/2019 06:55 (21), 02/04/2024 08:30 (5)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!