Ubuntu update for libxml2
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2022-2309 CVE-2023-28484 CVE-2023-29469 |
| CWE-ID | CWE-476 CWE-399 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system libxml2-utils (Ubuntu package) Operating systems & Components / Operating system package or component libxml2 (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) NULL pointer dereference
EUVDB-ID: #VU66813
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-2022-2309
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 within the iterwalk() function. A remote attacker can pass specially crafted XML data to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected package libxml2 to the latest version.
Vulnerable software versionsUbuntu: 23.04
libxml2-utils (Ubuntu package): before 2.9.14+dfsg-1.1ubuntu0.1
libxml2 (Ubuntu package): before 2.9.14+dfsg-1.1ubuntu0.1
External linkshttp://ubuntu.com/security/notices/USN-6028-2
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) NULL pointer dereference
EUVDB-ID: #VU74863
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-2023-28484
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 in xmlSchemaFixupComplexType. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected package libxml2 to the latest version.
Vulnerable software versionsUbuntu: 23.04
libxml2-utils (Ubuntu package): before 2.9.14+dfsg-1.1ubuntu0.1
libxml2 (Ubuntu package): before 2.9.14+dfsg-1.1ubuntu0.1
External linkshttp://ubuntu.com/security/notices/USN-6028-2
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) Resource management error
EUVDB-ID: #VU74862
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-2023-29469
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources when working with hashes of empty dict strings. A remote attacker can and perform a denial of service (DoS) attack.
MitigationUpdate the affected package libxml2 to the latest version.
Vulnerable software versionsUbuntu: 23.04
libxml2-utils (Ubuntu package): before 2.9.14+dfsg-1.1ubuntu0.1
libxml2 (Ubuntu package): before 2.9.14+dfsg-1.1ubuntu0.1
External linkshttp://ubuntu.com/security/notices/USN-6028-2
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.
