| 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. |
|---|---|---|
| 4.1 | $0-$5k | 0.64 |
A vulnerability was found in libfetch. It has been classified as problematic. This affects the function strtol of the component FTP/HTTP. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-125. This is going to have an impact on confidentiality. The summary by CVE is:
libfetch before 2021-07-26, as used in apk-tools, xbps, and other products, mishandles numeric strings for the FTP and HTTP protocols. The FTP passive mode implementation allows an out-of-bounds read because strtol is used to parse the relevant numbers into address bytes. It does not check if the line ends prematurely. If it does, the for-loop condition checks for the ‘ ’ terminator one byte too late.
The weakness was released 08/04/2021. It is possible to read the advisory at gitlab.alpinelinux.org. This vulnerability is uniquely identified as CVE-2021-36159 since 07/05/2021. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.
Upgrading to version 2021-07-26 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.
Name
VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Information disclosure
CWE: CWE-125
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | unlock | unlock | unlock | unlock |
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| Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: Upgrade
Status: 🔍
0-Day Time: 🔒
Upgrade: libfetch 2021-07-26
07/05/2021 CVE assigned
07/26/2021 Countermeasure disclosed
08/04/2021 Advisory disclosed
08/04/2021 VulDB entry created
08/07/2021 VulDB last updateAdvisory: gitlab.alpinelinux.org
Status: Confirmed
CVE: CVE-2021-36159 (🔒)
Created: 08/04/2021 12:40
Updated: 08/07/2021 18:08
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍
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