Ubuntu update for clamav
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-1252 CVE-2021-1404 CVE-2021-1405 |
| CWE-ID | CWE-835 CWE-125 CWE-476 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system libclamav9 (Ubuntu package) Operating systems & Components / Operating system package or component clamav (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Infinite loop
EUVDB-ID: #VU52792
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1252
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in the Excel XLM macro parsing module. A remote attacker can consume all available system resources and cause denial of service conditions.
MitigationUpdate the affected package clamav to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 21.04
libclamav9 (Ubuntu package): before 0.103.2+dfsg-1ubuntu0.21.04.1
clamav (Ubuntu package): before 0.103.2+dfsg-1ubuntu0.21.04.1
External linkshttp://ubuntu.com/security/notices/USN-4918-3
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.
2) Out-of-bounds read
EUVDB-ID: #VU52793
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1404
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the PDF parsing module. A remote attacker can create a specially crafted PDF file, pass it to the application, trigger out-of-bounds read error and read contents of memory on the system.
MitigationUpdate the affected package clamav to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 21.04
libclamav9 (Ubuntu package): before 0.103.2+dfsg-1ubuntu0.21.04.1
clamav (Ubuntu package): before 0.103.2+dfsg-1ubuntu0.21.04.1
External linkshttp://ubuntu.com/security/notices/USN-4918-3
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.
3) NULL pointer dereference
EUVDB-ID: #VU52784
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1405
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can send a specially crafted email to the server and perform a denial of service (DoS) attack.
MitigationUpdate the affected package clamav to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 21.04
libclamav9 (Ubuntu package): before 0.103.2+dfsg-1ubuntu0.21.04.1
clamav (Ubuntu package): before 0.103.2+dfsg-1ubuntu0.21.04.1
External linkshttp://ubuntu.com/security/notices/USN-4918-3
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.
