GNU Bison 3.7.1.1-cb7dc-dirty src/parse-gram.c input validation

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.
5.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in GNU Bison 3.7.1.1-cb7dc-dirty. The impacted element is an unknown function of the file src/parse-gram.c. The manipulation results in input validation. This vulnerability was named CVE-2020-24980. The attack needs to be approached locally. There is no available exploit.

Detailsinfo

A vulnerability was found in GNU Bison 3.7.1.1-cb7dc-dirty. It has been classified as critical. Affected is an unknown functionality of the file src/parse-gram.c. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An assertion failure was found in src/parse-gram.c in GNU bison 3.7.1.1-cb7dc-dirty. A local attacker may execute bison with crafted input file containing character '\' at the end and while still in a character or a string.

The weakness was presented 09/04/2020. This vulnerability is traded as CVE-2020-24980 since 08/28/2020. The attack needs to be approached locally. The successful exploitation needs a authentication. There are known technical details, but no exploit is available.

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

See VDB-160727 for similar entry. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/28/2020 🔍
09/04/2020 +7 days 🔍
09/04/2020 +0 days 🔍
09/04/2020 +0 days 🔍

Sourcesinfo

Vendor: gnu.org

Status: Not defined

CVE: CVE-2020-24980 (🔍)
GCVE (CVE): GCVE-0-2020-24980
GCVE (VulDB): GCVE-100-160728
See also: 🔍

Entryinfo

Created: 09/04/2020 13:39
Updated: 09/04/2020 13:44
Changes: 09/04/2020 13:39 (36), 09/04/2020 13:44 (17)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!