Vulnerability · Published Aug 30, 2024 · Assigned by mitre
CVE-2024-45491
High 7.3
In plain English
A high-severity integer overflow in the expat package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 67% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.1%top 33.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | expat | 2.2.5-15.el8_10 | ALSA-2024:6989 |
| AlmaLinux:9 | expat | 2.5.0-2.el9_4.1 | ALSA-2024:6754 |
| AlmaLinux:8 | expat-devel | 2.2.5-15.el8_10 | ALSA-2024:6989 |
| AlmaLinux:9 | expat-devel | 2.5.0-2.el9_4.1 | ALSA-2024:6754 |
| AlmaLinux:8 | xmlrpc-c | 1.51.0-10.el8_10 | ALSA-2024:8859 |
| AlmaLinux:8 | xmlrpc-c-c++ | 1.51.0-10.el8_10 | ALSA-2024:8859 |
| AlmaLinux:8 | xmlrpc-c-client | 1.51.0-10.el8_10 | ALSA-2024:8859 |
| AlmaLinux:8 | xmlrpc-c-client++ | 1.51.0-10.el8_10 | ALSA-2024:8859 |
| AlmaLinux:8 | xmlrpc-c-devel | 1.51.0-10.el8_10 | ALSA-2024:8859 |
| Alpine:v3.20 | expat | 2.6.3-r0 | ALPINE-CVE-2024-45491 |
| Alpine:v3.21 | expat | 2.6.3-r0 | ALPINE-CVE-2024-45491 |
| Alpine:v3.22 | expat | 2.6.3-r0 | ALPINE-CVE-2024-45491 |
| Alpine:v3.23 | expat | 2.6.3-r0 | ALPINE-CVE-2024-45491 |
| Alpine:v3.24 | expat | 2.6.3-r0 | ALPINE-CVE-2024-45491 |
| Alpine:v3.20 | qt5-qtwebengine | 5.15.16-r12 | ALPINE-CVE-2024-45491 |
| Alpine:v3.21 | qt5-qtwebengine | 5.15.17-r3 | ALPINE-CVE-2024-45491 |
| Alpine:v3.22 | qt5-qtwebengine | 5.15.17-r3 | ALPINE-CVE-2024-45491 |
| Alpine:v3.23 | qt5-qtwebengine | 5.15.17-r3 | ALPINE-CVE-2024-45491 |
| Alpine:v3.21 | qt6-qtwebengine | 6.7.2-r6 | ALPINE-CVE-2024-45491 |
| Alpine:v3.22 | qt6-qtwebengine | 6.7.2-r6 | ALPINE-CVE-2024-45491 |
| Alpine:v3.23 | qt6-qtwebengine | 6.7.2-r6 | ALPINE-CVE-2024-45491 |
| Alpine:v3.24 | qt6-qtwebengine | 6.7.2-r6 | ALPINE-CVE-2024-45491 |
| Debian:12 | expat | 2.5.0-1+deb12u1 | DEBIAN-CVE-2024-45491 |
| Debian:12 | expat | 2.5.0-1+deb12u1 | DSA-5770-1 |
| Debian:13 | expat | 2.6.2-2 | DEBIAN-CVE-2024-45491 |
| Debian:14 | expat | 2.6.2-2 | DEBIAN-CVE-2024-45491 |
| Debian:12 | libxmltok | no fix listed | DEBIAN-CVE-2024-45491 |
| Rocky Linux:8 | expat | 0:2.2.5-15.el8_10 | RLSA-2024:6989 |
| Rocky Linux:9 | expat | 0:2.5.0-2.el9_4.1 | RLSA-2024:6754 |
| Rocky Linux:8 | xmlrpc-c | 0:1.51.0-10.el8_10 | RLSA-2024:8859 |
| Ubuntu:22.04:LTS | cadaver | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:24.04:LTS | cadaver | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:25.10 | cadaver | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.04:LTS | cadaver | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.10 | cadaver | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:22.04:LTS | expat | 2.4.7-1ubuntu0.4 | USN-7000-2 |
| Ubuntu:22.04:LTS | expat | 2.4.7-1ubuntu0.4 | UBUNTU-CVE-2024-45491 |
| Ubuntu:24.04:LTS | expat | 2.6.1-2ubuntu0.1 | USN-7000-1 |
| Ubuntu:24.04:LTS | expat | 2.6.1-2ubuntu0.1 | UBUNTU-CVE-2024-45491 |
| Ubuntu:22.04:LTS | insighttoolkit4 | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:22.04:LTS | matanza | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:24.04:LTS | matanza | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:25.10 | matanza | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.04:LTS | matanza | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.10 | matanza | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:25.10 | swish-e | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.10 | swish-e | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:22.04:LTS | tdom | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:24.04:LTS | tdom | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:25.10 | tdom | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.04:LTS | tdom | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.10 | tdom | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:22.04:LTS | wbxml2 | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:24.04:LTS | wbxml2 | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:25.10 | wbxml2 | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.04:LTS | wbxml2 | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.10 | wbxml2 | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:25.10 | xmlrpc-c | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.04:LTS | xmlrpc-c | no fix listed | UBUNTU-CVE-2024-45491 |
| Ubuntu:26.10 | xmlrpc-c | no fix listed | UBUNTU-CVE-2024-45491 |
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- https://github.com/libexpat/libexpat/pull/891
- https://github.com/libexpat/libexpat/issues/888
- https://security.netapp.com/advisory/ntap-20241018-0003/
- https://lists.debian.org/debian-lts-announce/2024/09/msg00036.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html