VDB-196532 · CVE-2021-27116 · Issue 4484

beego up to 2.0.2 profile.go MemProf symlink

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.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in beego up to 2.0.2. The affected element is the function MemProf of the file profile.go. Such manipulation leads to symlink. This vulnerability is uniquely identified as CVE-2021-27116. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in beego up to 2.0.2. It has been rated as critical. Affected by this issue is the function MemProf of the file profile.go. The manipulation with an unknown input leads to a symlink vulnerability. Using CWE to declare the problem leads to CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 04/05/2022. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-27116 since 02/10/2021. 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

beego

Version

Website

Product: https://github.com/beego/beego/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

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

CNA Base Score: 7.8
CNA Vector (MITRE): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/10/2021 🔍
04/05/2022 +418 days 🔍
04/05/2022 +0 days 🔍
04/08/2022 +3 days 🔍

Sourcesinfo

Product: github.com

Advisory: 4484
Status: Confirmed

CVE: CVE-2021-27116 (🔍)
GCVE (CVE): GCVE-0-2021-27116
GCVE (VulDB): GCVE-100-196532

Entryinfo

Created: 04/05/2022 22:12
Updated: 04/08/2022 09:04
Changes: 04/05/2022 22:12 (37), 04/08/2022 09:01 (13), 04/08/2022 09:04 (1)
Complete: 🔍
Cache ID: 216::103