Anolis OS update for expat



Risk High
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2024-28757
CVE-2024-45490
CVE-2024-45491
CVE-2024-45492
CVE-2024-50602
CWE-ID CWE-611
CWE-124
CWE-190
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Anolis OS
Operating systems & Components / Operating system

expat-doc
Operating systems & Components / Operating system package or component

expat-static
Operating systems & Components / Operating system package or component

expat-devel
Operating systems & Components / Operating system package or component

expat
Operating systems & Components / Operating system package or component

Vendor OpenAnolis

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) XML External Entity injection

EUVDB-ID: #VU87337

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-28757

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input when using external parsers via XML_ExternalEntityParserCreate. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 23

expat-doc: before 2.5.0-4

expat-static: before 2.5.0-4

expat-devel: before 2.5.0-4

expat: before 2.5.0-4

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2025:0581


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) Buffer Underwrite ('Buffer Underflow')

EUVDB-ID: #VU96897

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-45490

CWE-ID: CWE-124 - Buffer Underwrite ('Buffer Underflow')

Exploit availability: No

Description

The 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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 23

expat-doc: before 2.5.0-4

expat-static: before 2.5.0-4

expat-devel: before 2.5.0-4

expat: before 2.5.0-4

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2025:0581


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: #VU96898

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-45491

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The 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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 23

expat-doc: before 2.5.0-4

expat-static: before 2.5.0-4

expat-devel: before 2.5.0-4

expat: before 2.5.0-4

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2025:0581


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.

4) Integer overflow

EUVDB-ID: #VU96899

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-45492

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The 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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 23

expat-doc: before 2.5.0-4

expat-static: before 2.5.0-4

expat-devel: before 2.5.0-4

expat: before 2.5.0-4

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2025:0581


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.

5) Input validation error

EUVDB-ID: #VU99614

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-50602

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the XML_ResumeParser function. A remote attacker can pass specially crafted XML input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 23

expat-doc: before 2.5.0-4

expat-static: before 2.5.0-4

expat-devel: before 2.5.0-4

expat: before 2.5.0-4

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2025:0581


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.



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