GNU cflow 1.6 src/parser.c call use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in GNU cflow 1.6. This affects the function call of the file src/parser.c. Such manipulation leads to use after free. This vulnerability is traded as CVE-2020-23856. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in GNU cflow 1.6. It has been rated as problematic. Affected by this issue is the function call of the file src/parser.c. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability.

The weakness was shared 05/19/2021. The advisory is shared for download at lists.gnu.org. This vulnerability is handled as CVE-2020-23856. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.3

VulDB Base Score: 3.5
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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

08/13/2020 🔍
05/19/2021 +279 days 🔍
05/19/2021 +0 days 🔍
05/22/2021 +3 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: lists.gnu.org
Status: Confirmed

CVE: CVE-2020-23856 (🔍)
GCVE (CVE): GCVE-0-2020-23856
GCVE (VulDB): GCVE-100-175364
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/19/2021 08:34
Updated: 05/22/2021 14:32
Changes: 05/19/2021 08:34 (40), 05/22/2021 14:32 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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