VDB-163643 · CVE-2020-27678 · GCVE-0-2020-27678

illumos pam_framework.c parse_user_name buffer overflow

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.
7.6	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in illumos. The impacted element is the function parse_user_name in the library lib/libpam/pam_framework.c. The manipulation leads to buffer overflow. This vulnerability is listed as CVE-2020-27678. There is no available exploit.

Detailsinfo

A vulnerability was found in illumos (the affected version is unknown) and classified as critical. This issue affects the function parse_user_name in the library lib/libpam/pam_framework.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The weakness was presented 10/26/2020. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2020-27678. Technical details of the vulnerability are known, but there is no available exploit.

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

illumos

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: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / 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

10/23/2020 🔍
10/26/2020 +3 days 🔍
10/26/2020 +0 days 🔍
11/27/2020 +32 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2020-27678 (🔍)
GCVE (CVE): GCVE-0-2020-27678
GCVE (VulDB): GCVE-100-163643

Entryinfo

Created: 10/26/2020 17:27
Updated: 11/27/2020 07:51
Changes: 10/26/2020 17:27 (34), 11/27/2020 07:47 (2), 11/27/2020 07:51 (18)
Complete: 🔍
Cache ID: 216::103