libssh 0.9.4 tftpserver.c ssh_buffer_new null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in libssh 0.9.4. This impacts the function ssh_buffer_new of the file tftpserver.c. The manipulation results in null pointer dereference. This vulnerability was named CVE-2020-16135. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in libssh 0.9.4. Affected is the function ssh_buffer_new of the file tftpserver.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.

The weakness was presented 07/29/2020. This vulnerability is traded as CVE-2020-16135 since 07/29/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of 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.

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

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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

07/29/2020 🔍
07/29/2020 +0 days 🔍
07/30/2020 +1 days 🔍
07/30/2020 +0 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-16135 (🔍)
GCVE (CVE): GCVE-0-2020-16135
GCVE (VulDB): GCVE-100-159168

Entryinfo

Created: 07/30/2020 16:50
Updated: 07/30/2020 16:55
Changes: 07/30/2020 16:50 (35), 07/30/2020 16:55 (17)
Complete: 🔍
Cache ID: 216::103

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