LibSass 3.5.5 prelexer.hpp alternatives memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in LibSass 3.5.5. This impacts the function Sass::Prelexer::alternatives of the file prelexer.hpp. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2019-6284. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in LibSass 3.5.5 (Programming Language Software). This vulnerability affects the function Sass::Prelexer::alternatives of the file prelexer.hpp. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::alternatives in prelexer.hpp.

The bug was discovered 01/13/2019. The weakness was published 01/14/2019 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2019-6284 since 01/14/2019. The attack can be initiated remotely. No form of authentication is required for a successful 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 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-129162 and VDB-129159. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 6.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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: Memory corruption
CWE: 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/13/2019 🔍
01/14/2019 +1 days 🔍
01/14/2019 +0 days 🔍
01/14/2019 +0 days 🔍
01/15/2019 +1 days 🔍
06/27/2023 +1624 days 🔍

Sourcesinfo

Advisory: 2816
Status: Not defined

CVE: CVE-2019-6284 (🔍)
GCVE (CVE): GCVE-0-2019-6284
GCVE (VulDB): GCVE-100-129160
See also: 🔍

Entryinfo

Created: 01/15/2019 10:26
Updated: 06/27/2023 08:42
Changes: 01/15/2019 10:26 (58), 04/29/2020 12:48 (1), 06/27/2023 08:42 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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