Detections
Analytics
Alpine: multiple asterisk packages: security update to 20.5.1-r0
high Tenable Cloud Security Plugin ID 423711
Description
There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:- Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk versions 18.20.0 and
prior, 20.5.0 and prior, and 21.0.0; as well as ceritifed-asterisk 18.9-cert5 and prior, the 'update'
functionality of the PJSIP_HEADER dialplan function can exceed the available buffer space for storing the
new value of a header. By doing so this can overwrite memory or cause a crash. This is not externally
exploitable, unless dialplan is explicitly written to update a header based on data from an outside
source. If the 'update' functionality is not used the vulnerability does not occur. A patch is available
at commit a1ca0268254374b515fa5992f01340f7717113fa. (CVE-2023-37457)
- Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions
18.20.1, 20.5.1, and 21.0.1, as well as certified-asterisk prior to 18.9-cert6, it is possible to read any
arbitrary file even when the `live_dangerously` is not enabled. This allows arbitrary files to be read.
Asterisk versions 18.20.1, 20.5.1, and 21.0.1, as well as certified-asterisk prior to 18.9-cert6, contain
a fix for this issue. (CVE-2023-49294)
- Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions
18.20.1, 20.5.1, and 21.0.1; as well as certified-asterisk prior to 18.9-cert6; Asterisk is susceptible to
a DoS due to a race condition in the hello handshake phase of the DTLS protocol when handling DTLS-SRTP
for media setup. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during
the attack. Abuse of this vulnerability may lead to a massive Denial of Service on vulnerable Asterisk
servers for calls that rely on DTLS-SRTP. Commit d7d7764cb07c8a1872804321302ef93bf62cba05 contains a fix,
which is part of versions 18.20.1, 20.5.1, 21.0.1, amd 18.9-cert6. (CVE-2023-49786)
See Also
https://security.alpinelinux.org/vuln/CVE-2023-37457
Plugin Details
Severity: High
ID: 423711
Version: Revision 1.5
Type: Local
Published: 4/4/2025
Updated: 7/2/2026
Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Medium
Score: 5
Percentile: 94.49
CVSS v2
Risk Factor: High
Base Score: 8.5
Temporal Score: 6.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:C
CVSS Score Source: CVE-2023-37457
CVSS v3
Risk Factor: High
Base Score: 8.2
Temporal Score: 7.4
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Vulnerability Publication Date: 12/14/2023