libxml2: Heap-based buffer over-read in function xmlDictAddString
Published May 18, 2017
7.5
HIGHCVSS 3.1
EPSS 4.63%
Description
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.
Affected products
No data.
No data.
Red Hat JBoss Core Services
n/a
Fixed · RHSA-2018:2486
Red Hat Enterprise Linux 5
libxml2
Will not fix
Red Hat Enterprise Linux 6
libxml2
Will not fix
Red Hat Enterprise Linux 7
libxml2
Will not fix
Red Hat Enterprise Linux 8
libxml2
Not affected
Red Hat Enterprise Linux 8
mingw-libxml2
Affected
Red Hat JBoss Core Services
libxml2
Affected
Red Hat JBoss Enterprise Web Server 3
libxml2
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat JBoss Core Services | n/a | Fixed | RHSA-2018:2486 |
| Red Hat Enterprise Linux 5 | libxml2 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libxml2 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libxml2 | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | libxml2 | Not affected | n/a |
| Red Hat Enterprise Linux 8 | mingw-libxml2 | Affected | n/a |
| Red Hat JBoss Core Services | libxml2 | Affected | n/a |
| Red Hat JBoss Enterprise Web Server 3 | libxml2 | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Dec 17, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.63% (0.04626) | 91.41th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.63% (0.04626) | 90.49th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.20% (0.00203) | 58.71th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.20% (0.00203) | 58.46th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.20% (0.00203) | 56.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.45% (0.01454) | 32.67th | v1 |
| Jan 6, 2022 | 1.45% (0.01454) | 31.96th | v1 |
| Sep 1, 2021 | 1.45% (0.01454) | 71.88th | v1 |
| Jun 30, 2021 | 1.45% (0.01454) | 0.00th | v1 |
| Jun 29, 2021 | 1.25% (0.01247) | 0.00th | v1 |
| Apr 14, 2021 | 1.04% (0.01040) | 0.00th | v1 |
References (11)
- http://www.debian.org/security/2017/dsa-3952 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2017/05/15/1 x_refsource_MISCExploitMailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/98568 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2017-9050 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1452553 Issue Tracking
- https://github.com/advisories/GHSA-8c56-cpmw-89x7 Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-9050
- https://security.gentoo.org/glsa/201711-01 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2017-9050
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2017/dsa-3952 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2017/05/15/1 | x_refsource_MISCExploitMailing ListPatchThird Party Advisory | |
| http://www.securityfocus.com/bid/98568 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2017-9050 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1452553 | Issue Tracking | |
| https://github.com/advisories/GHSA-8c56-cpmw-89x7 | Advisory | |
| https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E | mailing-listx_refsource_MLIST | |
| https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-9050 | ||
| https://security.gentoo.org/glsa/201711-01 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2017-9050 |
Change history (0)
No recorded changes yet.