CVE-2021-43303: Buffer Overflow
First published: Wed Feb 16 2022(Updated: )
Buffer overflow in PJSUA API when calling pjsua_call_dump. An attacker-controlled 'buffer' argument may cause a buffer overflow, since supplying an output buffer smaller than 128 characters may overflow the output buffer, regardless of the 'maxlen' argument supplied
Credit: reefs@jfrog.com reefs@jfrog.com reefs@jfrog.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Teluu PJSIP | <=2.11.1 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| ubuntu/ring | <20180228.1.503 | 20180228.1.503 |
| ubuntu/ring | <20190215.1. | 20190215.1. |
| debian/asterisk | 1:16.28.0~dfsg-0+deb10u4 1:16.28.0~dfsg-0+deb11u3 1:16.28.0~dfsg-0+deb11u4 1:20.6.0~dfsg+~cs6.13.40431414-2 | |
| debian/ring | <=20190215.1.f152c98~ds1-1+deb10u1<=20210112.2.b757bac~ds1-1 | 20190215.1.f152c98~ds1-1+deb10u2 20230206.0~ds2-1.1 20231201.0~ds1-1 |
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Reference Links
- https://github.com/pjsip/pjproject/security/advisories/GHSA-qcvw-h34v-c7r9
- https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://www.debian.org/security/2022/dsa-5285
- https://launchpad.net/bugs/cve/CVE-2021-43303
- https://github.com/pjsip/pjproject/commit/d979253c924a686fa511d705be1f3ad0c5b20337
- https://security-tracker.debian.org/tracker/CVE-2021-43303
- https://ubuntu.com/security/notices/USN-6422-1
- https://www.cve.org/CVERecord?id=CVE-2021-43303
- https://nvd.nist.gov/vuln/detail/CVE-2021-43303
- https://ubuntu.com/security/CVE-2021-43303
Frequently Asked Questions
What is CVE-2021-43303?
CVE-2021-43303 is a buffer overflow vulnerability in the PJSUA API when calling pjsua_call_dump.
What is the severity of CVE-2021-43303?
The severity of CVE-2021-43303 is critical with a CVSS score of 9.8.
Which software is affected by CVE-2021-43303?
CVE-2021-43303 affects Teluu Pjsip versions up to 2.11.1 and Debian Linux 9.0, 10.0, and 11.0.
How can an attacker exploit CVE-2021-43303?
An attacker can exploit CVE-2021-43303 by supplying an output buffer smaller than 128 characters, causing a buffer overflow.
Are there any references for CVE-2021-43303?
Yes, you can find more information about CVE-2021-43303 at the following references: [link 1](https://github.com/pjsip/pjproject/security/advisories/GHSA-qcvw-h34v-c7r9), [link 2](https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html), [link 3](https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html).
- collector/nvd-api
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- collector/launchpad-cve
- source/Launchpad
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/remedy
- agent/severity
- agent/weakness
- agent/author
- agent/description
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/teluu
- canonical/teluu pjsip
- version/teluu pjsip/2.11.1
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- version/debian debian linux/11.0
- package-manager/debian
- package-manager/ubuntu