SB2026041668 - Ubuntu update for pjproject
Published: April 16, 2026 Updated: April 17, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 14 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2017-16872)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error when parsing the numeric header fields in a SIP message. A remote attacker can use specially crafted invalid values, trigger buffer overflow and execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
2) Integer overflow (CVE-ID: CVE-2017-16875)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in the ioqueue component due to issuing a double key unregistration after a remote attacker initiates a socket connection with specific settings and sequences. A remote attacker can trigger integer overflow, ioqueue backends to reject future key registrations and cause the service to crash.
3) Integer overflow (CVE-ID: CVE-2018-1000098)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in pjmedia SDP parsing due to integer overflow. A remote attacker can submit a specially crafted message, trigger memory corruption and cause the service to crash.
4) NULL pointer dereference (CVE-ID: CVE-2018-1000099)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists in pjmedia SDP parsing due to NULL pointer dereference. A remote attacker can submit a specially crafted message and cause the service to crash.
5) Improper validation of certificate with host mismatch (CVE-ID: CVE-2020-15260)
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to improper remote hostname authentication. A remote attacker can perform a man-in-the-middle attack and route a connection to another destination.
6) Resource exhaustion (CVE-ID: CVE-2021-21375)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
7) Uncaught Exception (CVE-ID: CVE-2021-32686)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The
vulnerability exists due to uncaught exception in pjsip when processing TLS handshake. A remote
attacker can initiate TLS connection with the software and then destroy
the socket during handshake, causing the application to crash.
8) Integer overflow (CVE-ID: CVE-2021-37706)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within STUN message that contains an ERROR-CODE attribute. A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
9) Stack-based buffer overflow (CVE-ID: CVE-2021-43299)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in PJSUA API when calling pjsua_player_create. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
10) Stack-based buffer overflow (CVE-ID: CVE-2021-43300)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in PJSUA API when calling pjsua_recorder_create. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
11) Stack-based buffer overflow (CVE-ID: CVE-2021-43301)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in PJSUA API when calling pjsua_playlist_create. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
12) Out-of-bounds read (CVE-ID: CVE-2021-43302)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in PJSUA API when calling pjsua_recorder_create. A remote attacker can trigger out-of-bounds read error and cause a denial of service condition on the system.
13) Buffer overflow (CVE-ID: CVE-2021-43303)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in PJSUA API when calling pjsua_call_dump. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
14) Stack-based buffer overflow (CVE-ID: CVE-2026-25994)
The vulnerability allows a remote attacker to cause a denial of service or execute arbitrary code.
The vulnerability exists due to stack-based buffer overflow in PJNATH ICE Session when processing credentials with excessively long usernames. A remote attacker can send crafted credentials with an excessively long username to cause a denial of service or execute arbitrary code.
This issue affects applications that use ICE.
Remediation
Install update from vendor's website.