---
cve: "CVE-2019-15903"
severity: "MEDIUM"
cvss: 6.5
epss: "6.6%"
vendor: "n/a"
kev: false
exploited: false
published: "2019-09-04 06:15:10"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T17:27:54+02:00"
---

# CVE-2019-15903

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 91b17cfeb8edf60ca23e33fe59ac231d0f2efb48 (Commit)
- c20b758c332d9a13afbbb276d30db1d183a85d43 (Commit)

## Referenzen

- <https://usn.ubuntu.com/4132-1/>
- <https://seclists.org/bugtraq/2019/Sep/30>
- <https://usn.ubuntu.com/4132-2/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BDUTI5TVQWIGGQXPEVI4T2ENHFSBMIBP/>
- <https://www.debian.org/security/2019/dsa-4530>
- <https://seclists.org/bugtraq/2019/Sep/37>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A4TZKPJFTURRLXIGLB34WVKQ5HGY6JJA/>
- <http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00081.html>
- <http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00080.html>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S26LGXXQ7YF2BP3RGOWELBFKM6BHF6UG/>
- <https://seclists.org/bugtraq/2019/Oct/29>
- <https://usn.ubuntu.com/4165-1/>
- <https://www.debian.org/security/2019/dsa-4549>
- <https://access.redhat.com/errata/RHSA-2019:3210>
- <https://access.redhat.com/errata/RHSA-2019:3237>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2019-15903) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_