LibSass 3.4.5 eval.cpp Eval::operator input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in LibSass 3.4.5. Affected by this issue is the function Eval::operator of the file eval.cpp. This manipulation causes input validation. This vulnerability appears as CVE-2017-11555. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in LibSass 3.4.5 (Programming Language Software) and classified as problematic. Affected by this vulnerability is the function Eval::operator of the file eval.cpp. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. The summary by CVE is:

There is an illegal address access in the Eval::operator function in eval.cpp in LibSass 3.4.5. A crafted input will lead to a remote denial of service.

The bug was discovered 07/27/2017. The weakness was presented 07/23/2017 (Website). The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2017-11555 since 07/22/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 104425 (openSUSE Security Update : libsass (openSUSE-2017-1250)), 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 170547 (OpenSUSE Security Update for libsass (openSUSE-SU-2017:2939-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104425). See VDB-104412, VDB-104414, VDB-104450 and VDB-104451 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 104425
Nessus Name: openSUSE Security Update : libsass (openSUSE-2017-1250)
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: 🔍
Exposure Time: 🔍

Timelineinfo

07/22/2017 🔍
07/22/2017 +0 days 🔍
07/23/2017 +1 days 🔍
07/23/2017 +0 days 🔍
07/27/2017 +4 days 🔍
11/07/2017 +103 days 🔍
11/07/2017 +0 days 🔍
10/31/2019 +723 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2017-11555 (🔍)
GCVE (CVE): GCVE-0-2017-11555
GCVE (VulDB): GCVE-100-104413
See also: 🔍

Entryinfo

Created: 07/23/2017 10:20
Updated: 10/31/2019 16:15
Changes: 07/23/2017 10:20 (67), 10/31/2019 16:15 (4)
Complete: 🔍
Cache ID: 216:AD3:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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