Buffer overflow in libexpat



Published: 2019-09-12 | Updated: 2022-01-17
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-15903
CWE-ID CWE-125
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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expat
Universal components / Libraries / Libraries used by multiple products

Vendor libexpat.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU21091

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2019-15903

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing XML documents within the expat library. A remote attacker can create a specially crafted XML file, pass it to the affected application, trigger out-of-bounds read error and read contents of memory on the system or crash the affected application.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

expat: 2.2.0 - 2.2.7


CPE2.3 External links

http://github.com/libexpat/libexpat/commit/c20b758c332d9a13afbbb276d30db1d183a85d43
http://github.com/libexpat/libexpat/issues/317
http://github.com/libexpat/libexpat/pull/318

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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