RPM link following

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in RPM. This impacts an unknown function. The manipulation results in link following. This vulnerability was named CVE-2021-35938. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in RPM (affected version unknown). It has been classified as critical. Affected is an unknown functionality. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

The weakness was presented 08/26/2022. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2021-35938 since 06/29/2021. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability. The upgrade is hosted for download at rpm.org. Applying the patch 25a435e90844ea98fe5eb7bef22c1aecf3a9c033 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: rpm.org
Patch: 25a435e90844ea98fe5eb7bef22c1aecf3a9c033

Timelineinfo

06/29/2021 🔍
08/26/2022 +423 days 🔍
08/26/2022 +0 days 🔍
10/02/2022 +37 days 🔍

Sourcesinfo

Advisory: 25a435e90844ea98fe5eb7bef22c1aecf3a9c033
Status: Confirmed

CVE: CVE-2021-35938 (🔍)
GCVE (CVE): GCVE-0-2021-35938
GCVE (VulDB): GCVE-100-207348

Entryinfo

Created: 08/26/2022 09:43
Updated: 10/02/2022 09:20
Changes: 08/26/2022 09:43 (21), 08/26/2022 09:44 (18), 10/02/2022 09:17 (1), 10/02/2022 09:20 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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