Ubuntu update for expat
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2024-45490 CVE-2024-45491 CVE-2024-45492 |
| CWE-ID | CWE-124 CWE-190 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system libexpat1 (Ubuntu package) Operating systems & Components / Operating system package or component expat (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Buffer Underwrite ('Buffer Underflow')
EUVDB-ID: #VU96897
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-45490
CWE-ID:
CWE-124 - Buffer Underwrite ('Buffer Underflow')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a boundary error in xmlparse.c when handling negative length for XML_ParseBuffer. A remote attacker can pass specially crafted input to the application, trigger buffer underflow and execute arbitrary code on the system.
Update the affected package expat to the latest version.
Vulnerable software versionsUbuntu: 22.04
libexpat1 (Ubuntu package): before 2.4.7-1ubuntu0.4
expat (Ubuntu package): before 2.4.7-1ubuntu0.4
External linkshttp://ubuntu.com/security/notices/USN-7000-2
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) Integer overflow
EUVDB-ID: #VU96898
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-45491
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the dtdCopy() function in xmlparse.c. A remote attacker can pass specially crafted input to the application, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected package expat to the latest version.
Vulnerable software versionsUbuntu: 22.04
libexpat1 (Ubuntu package): before 2.4.7-1ubuntu0.4
expat (Ubuntu package): before 2.4.7-1ubuntu0.4
External linkshttp://ubuntu.com/security/notices/USN-7000-2
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) Integer overflow
EUVDB-ID: #VU96899
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2024-45492
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the nextScaffoldPart() function in xmlparse.c. A remote attacker can pass specially crafted data to the application, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected package expat to the latest version.
Vulnerable software versionsUbuntu: 22.04
libexpat1 (Ubuntu package): before 2.4.7-1ubuntu0.4
expat (Ubuntu package): before 2.4.7-1ubuntu0.4
External linkshttp://ubuntu.com/security/notices/USN-7000-2
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.
