CVE catalog
CVE-2017-18258
libxml2: CVE-2017-18258
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.74% · Oct 25, 2026
The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libxml2 | sid | 2.15.4+dfsg-1 | fixed |
| Debian | libxml2 | forky | 2.15.4+dfsg-1 | fixed |
| Debian | libxml2 | trixie | 2.12.7+dfsg+really2.9.14-2.1+deb13u3 | fixed |
| Debian | libxml2 | trixie-security | 2.12.7+dfsg+really2.9.14-2.1+deb13u1 | fixed |
| Debian | libxml2 | bookworm | 2.9.14+dfsg-1.3~deb12u6 | fixed |
| Debian | libxml2 | bookworm-security | 2.9.14+dfsg-1.3~deb12u4 | fixed |
| Cpe | libxml2 | Not reported | 2.9.6 | fixed |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu2 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu3 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.1 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.2 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.3 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.4 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.5 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.6 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.7 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.8 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.9 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.10 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.11 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.12 | vulnerable |
| Ubuntu | libxml2 | 14.04 | 2.9.1+dfsg1-3ubuntu4.13 | fixed |
| Ubuntu | libxml2 | 16.04 | 2.9.2+zdfsg1-4 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.2+zdfsg1-4ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.2+zdfsg1-4ubuntu2 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.2+zdfsg1-4ubuntu3 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.3+dfsg1-1 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.3+dfsg1-1ubuntu0.1 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.3+dfsg1-1ubuntu0.2 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.3+dfsg1-1ubuntu0.3 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.3+dfsg1-1ubuntu0.4 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.3+dfsg1-1ubuntu0.5 | vulnerable |
| Ubuntu | libxml2 | 16.04 | 2.9.3+dfsg1-1ubuntu0.6 | fixed |
| Ubuntu | libxml2 | 18.04 | 2.9.4+dfsg1-4ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 18.04 | 2.9.4+dfsg1-5ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 18.04 | 2.9.4+dfsg1-5ubuntu2 | vulnerable |
| Ubuntu | libxml2 | 18.04 | 2.9.4+dfsg1-5.1ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 18.04 | 2.9.4+dfsg1-5.2ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 18.04 | 2.9.4+dfsg1-6.1ubuntu1 | vulnerable |
| Ubuntu | libxml2 | 18.04 | 2.9.4+dfsg1-6.1ubuntu1.2 | fixed |
| Suse | libxml2 | linux enterprise desktop 12 sp3 | 2.9.4-46.15.1 | fixed |
| Suse | python-libxml2 | linux enterprise desktop 12 sp3 | 2.9.4-46.15.1 | fixed |
| Suse | libxml2 | linux enterprise software development kit 12 sp3 | 2.9.4-46.15.1 | fixed |
| Suse | libxml2 | linux enterprise server 12 sp3 | 2.9.4-46.15.1 | fixed |
| Suse | python-libxml2 | linux enterprise server 12 sp3 | 2.9.4-46.15.1 | fixed |
| Suse | libxml2 | linux enterprise server for sap applications 12 sp3 | 2.9.4-46.15.1 | fixed |
| Suse | python-libxml2 | linux enterprise server for sap applications 12 sp3 | 2.9.4-46.15.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libxml2 | source | sid | 2.9.10+dfsg-2 | low | Not reported | [895245] |
| Debian | libxml2 | source | forky | 2.9.10+dfsg-2 | low | Not reported | [895245] |
| Debian | libxml2 | source | trixie | 2.9.10+dfsg-2 | low | Not reported | [895245] |
| Debian | libxml2 | source | bookworm | 2.9.10+dfsg-2 | low | Not reported | [895245] |
| Cpe | libxml2 | cpe | Not reported | 2.9.6 | Not reported | NVD-CVE-2017-18258 | Not reported |
| Ubuntu | libxml2 | deb | 14.04 | 2.9.1+dfsg1-3ubuntu4.13 | Not reported | UBUNTU-CVE-2017-18258 | Not reported |
| Ubuntu | libxml2 | deb | 16.04 | 2.9.3+dfsg1-1ubuntu0.6 | Not reported | UBUNTU-CVE-2017-18258 | Not reported |
| Ubuntu | libxml2 | deb | 18.04 | 2.9.4+dfsg1-6.1ubuntu1.2 | Not reported | UBUNTU-CVE-2017-18258 | Not reported |
| Suse | libxml2 | rpm | linux enterprise desktop 12 sp3 | 2.9.4-46.15.1 | Not reported | SUSE-SU-2018:3081-1 | Not reported |
| Suse | python-libxml2 | rpm | linux enterprise desktop 12 sp3 | 2.9.4-46.15.1 | Not reported | SUSE-SU-2018:3081-1 | Not reported |
| Suse | libxml2 | rpm | linux enterprise software development kit 12 sp3 | 2.9.4-46.15.1 | Not reported | SUSE-SU-2018:3081-1 | Not reported |
| Suse | libxml2 | rpm | linux enterprise server 12 sp3 | 2.9.4-46.15.1 | Not reported | SUSE-SU-2018:3081-1 | Not reported |
| Suse | python-libxml2 | rpm | linux enterprise server 12 sp3 | 2.9.4-46.15.1 | Not reported | SUSE-SU-2018:3081-1 | Not reported |
| Suse | libxml2 | rpm | linux enterprise server for sap applications 12 sp3 | 2.9.4-46.15.1 | Not reported | SUSE-SU-2018:3081-1 | Not reported |
| Suse | python-libxml2 | rpm | linux enterprise server for sap applications 12 sp3 | 2.9.4-46.15.1 | Not reported | SUSE-SU-2018:3081-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libxml2]Unknown
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
- [libxml2-dev]Unknown
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
- [libxml2-doc]Unknown
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· all · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· all · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· all · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· all · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
- [libxml2-utils]Unknown
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
- [python3-libxml2]Unknown
Source package: [libxml2]
Details (4)
2.9.14+dfsg-1.3~deb12u6· amd64 · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u6· arm64 · bookwormFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· amd64 · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
2.9.14+dfsg-1.3~deb12u4· arm64 · bookworm-securityFixed · Fixed:
2.9.10+dfsg-2dsa · libxml2 · debian · bookworm
Observed:
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-398330.json]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2020_1190.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2017-18258]
- [https://osv.dev/vulnerability/DLA-1524-1]
- [https://osv.dev/vulnerability/DLA-2369-1]
- [https://osv.dev/vulnerability/SUSE-SU-2018:3081-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2017-18258]
- [https://security-tracker.debian.org/tracker/CVE-2017-18258]
- [https://security.access.redhat.com/data/csaf/v2/vex/2017/cve-2017-18258.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1614.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]