perl-XML-Twig XML::Twig xml external entity reference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.0$0-$5k0.11

Summaryinfo

A vulnerability described as critical has been identified in perl-XML-Twig. This affects the function XML::Twig. Such manipulation leads to xml external entity reference. This vulnerability is uniquely identified as CVE-2016-9180. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in perl-XML-Twig (Programming Language Software) (unknown version). It has been rated as critical. Affected by this issue is the function XML::Twig. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. CVE summarizes:

perl-XML-Twig: The option to `expand_external_ents`, documented as controlling external entity expansion in XML::Twig does not work. External entities are always expanded, regardless of the option's setting.

The bug was discovered 09/27/2016. The weakness was disclosed 12/22/2016 (Website). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2016-9180 since 11/04/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 86 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105467 (F5 Networks BIG-IP : perl-XML-Twig vulnerability (K08383757)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371259 (F5 BIG-IP ASM perl-XML-Twig Vulnerability (K08383757)).

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 (105467) and SecurityFocus (BID 94219†). The entry VDB-94653 is pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
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: 105467
Nessus Name: F5 Networks BIG-IP : perl-XML-Twig vulnerability (K08383757)
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

09/27/2016 🔍
11/04/2016 +38 days 🔍
11/10/2016 +6 days 🔍
12/22/2016 +42 days 🔍
12/22/2016 +0 days 🔍
12/23/2016 +1 days 🔍
02/10/2017 +49 days 🔍
12/28/2017 +321 days 🔍
10/12/2022 +1749 days 🔍

Sourcesinfo

Advisory: K08383757
Status: Not defined

CVE: CVE-2016-9180 (🔍)
GCVE (CVE): GCVE-0-2016-9180
GCVE (VulDB): GCVE-100-94652
SecurityFocus: 94219 - perl-XML-Twig CVE-2016-9180 XML External Entity Injection Vulnerability

See also: 🔍

Entryinfo

Created: 12/23/2016 10:14
Updated: 10/12/2022 14:56
Changes: 12/23/2016 10:14 (69), 07/15/2019 08:58 (6), 10/12/2022 14:56 (4)
Complete: 🔍
Cache ID: 216:586:103

Once again VulDB remains the best source for vulnerability data.

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