Mercurial up to 4.7.1 Manifest Entry cext/manifest.c out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Mercurial up to 4.7.1. This issue affects some unknown processing of the file cext/manifest.c of the component Manifest Entry Handler. Executing a manipulation can lead to out-of-bounds. This vulnerability is registered as CVE-2018-17983. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Mercurial up to 4.7.1. It has been declared as critical. This vulnerability affects an unknown function of the file cext/manifest.c of the component Manifest Entry Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

cext/manifest.c in Mercurial before 4.7.2 has an out-of-bounds read during parsing of a malformed manifest entry.

The bug was discovered 10/01/2018. The weakness was published 10/04/2018 (Website). The advisory is available at mercurial-scm.org. This vulnerability was named CVE-2018-17983 since 10/04/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 118482 (openSUSE Security Update : mercurial (openSUSE-2018-1297)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171873 (OpenSUSE Security Update for mercurial (openSUSE-SU-2018:3517-1)).

Upgrading to version 4.7.2 eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118482). 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: 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: Out-of-bounds
CWE: CWE-125 / CWE-119
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: 118482
Nessus Name: openSUSE Security Update : mercurial (openSUSE-2018-1297)
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: 🔍

Upgrade: Mercurial 4.7.2

Timelineinfo

10/01/2018 🔍
10/04/2018 +2 days 🔍
10/04/2018 +0 days 🔍
10/04/2018 +0 days 🔍
10/05/2018 +1 days 🔍
10/26/2018 +21 days 🔍
10/29/2018 +3 days 🔍
03/29/2020 +517 days 🔍

Sourcesinfo

Advisory: mercurial-scm.org
Status: Not defined

CVE: CVE-2018-17983 (🔍)
GCVE (CVE): GCVE-0-2018-17983
GCVE (VulDB): GCVE-100-124810

Entryinfo

Created: 10/05/2018 07:16
Updated: 03/29/2020 20:16
Changes: 10/05/2018 07:16 (72), 03/29/2020 20:16 (2)
Complete: 🔍
Cache ID: 216::103

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

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