Ubuntu update for postgresql-10
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-3449 CVE-2021-3677 |
| CWE-ID | CWE-476 CWE-401 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system postgresql-12 (Ubuntu package) Operating systems & Components / Operating system package or component postgresql-13 (Ubuntu package) Operating systems & Components / Operating system package or component postgresql-10 (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) NULL pointer dereference
EUVDB-ID: #VU51733
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-3449
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when processing TLSv1.2 renegotiations. A remote attacker can send a maliciously crafted renegotiation ClientHello message, which omits the signature_algorithms extension but includes a signature_algorithms_cert extension, trigger a NULL pointer dereference error and crash the server. MitigationUpdate the affected package postgresql-10 to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 21.04
postgresql-12 (Ubuntu package): before 12.8-0ubuntu0.20.04.1
postgresql-13 (Ubuntu package): before 13.4-0ubuntu0.21.04.1
postgresql-10 (Ubuntu package): before 10.18-0ubuntu0.18.04.1
External linkshttp://ubuntu.com/security/notices/USN-5038-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) Memory leak
EUVDB-ID: #VU59043
Risk: Low
CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3677
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote user to perform DoS attack or gain access to sensitive information.
The vulnerability exists due memory leak during parallel sort operations. A remote user can force the application to leak memory and perform denial of service attack or read arbitrary memory parts on the system.
Update the affected package postgresql-10 to the latest version.
Vulnerable software versionsUbuntu: 18.04 - 21.04
postgresql-12 (Ubuntu package): before 12.8-0ubuntu0.20.04.1
postgresql-13 (Ubuntu package): before 13.4-0ubuntu0.21.04.1
postgresql-10 (Ubuntu package): before 10.18-0ubuntu0.18.04.1
External linkshttp://ubuntu.com/security/notices/USN-5038-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
