Apache Subversion authz Rule improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apache Subversion. Affected by this vulnerability is an unknown functionality of the component authz Rule Handler. This manipulation causes improper authentication. This vulnerability is handled as CVE-2021-28544. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Apache Subversion (Versioning Software) (the affected version is unknown) and classified as critical. Affected by this vulnerability is an unknown code of the component authz Rule Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality.

The weakness was released 04/12/2022. It is possible to read the advisory at subversion.apache.org. This vulnerability is known as CVE-2021-28544 since 03/16/2021. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/21/2025).

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

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2022-0778). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Apple macOS

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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

03/16/2021 🔍
04/12/2022 +391 days 🔍
04/12/2022 +0 days 🔍
10/21/2025 +1288 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: subversion.apache.org
Status: Confirmed

CVE: CVE-2021-28544 (🔍)
GCVE (CVE): GCVE-0-2021-28544
GCVE (VulDB): GCVE-100-197131
CERT Bund: WID-SEC-2022-0778 - Apple macOS: Mehrere Schwachstellen

Entryinfo

Created: 04/12/2022 22:40
Updated: 10/21/2025 10:44
Changes: 04/12/2022 22:40 (37), 04/18/2022 13:33 (1), 04/18/2022 13:40 (1), 10/21/2025 10:44 (20)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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