PJSIP up to 2.11.1 RTCP XR Message out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in PJSIP up to 2.11.1. This issue affects some unknown processing of the component RTCP XR Message Handler. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2021-43845. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in PJSIP up to 2.11.1. Affected by this issue is some unknown functionality of the component RTCP XR Message Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was published 12/28/2021 as GHSA-r374-qrwv-86hh. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-43845 since 11/16/2021. There are neither technical details nor an exploit publicly available.

Applying the patch f74c1fc22b760d2a24369aa72c74c4a9ab985859 is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CNA Base Score: 8.2
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: f74c1fc22b760d2a24369aa72c74c4a9ab985859

Timelineinfo

11/16/2021 🔍
12/28/2021 +42 days 🔍
12/28/2021 +0 days 🔍
11/04/2025 +1407 days 🔍

Sourcesinfo

Advisory: GHSA-r374-qrwv-86hh
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43845 (🔍)
GCVE (CVE): GCVE-0-2021-43845
GCVE (VulDB): GCVE-100-189380

Entryinfo

Created: 12/28/2021 08:00
Updated: 11/04/2025 21:08
Changes: 12/28/2021 08:00 (50), 12/31/2021 09:11 (2), 11/04/2025 21:08 (33)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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