CVE-2021-3517 @ morris
Status
new
Priority
8.1
Match score
4.0
Risk
DoS
Remote
CVSS
8.6 HIGH
Reason
cpe: libxml2; pkgs: libxml2, libxml2-devel, libxml2-python; version: in-range: libxml2-2.9.1-6.0.13.el7_9.6.tuxcare.els2, libxml2-devel-2.9.1-6.0.13.el7_9.6.tuxcare.els2, libxml2-python-2.9.1-6.0.13.el7_9.6.tuxcare.els2; risk:dos
Created
2026-10-15T10:20:42Z
Updated
2026-10-20T10:18:50Z
Package interrogation (copy)
Run on the host — click to copy a command. RPM
| Package | Commands |
|---|---|
| libxml2-2.9.1-6.0.13.el7_9.6.tuxcare.els2 | |
| libxml2-devel-2.9.1-6.0.13.el7_9.6.tuxcare.els2 | |
| libxml2-python-2.9.1-6.0.13.el7_9.6.tuxcare.els2 | |
| alt-libxml2-2.10.2-9.el7 | |
| alt-libxml2-devel-2.10.2-9.el7 | |
| ea-libxml2-2.15.4-1.el7.cloudlinux |
Inventory lookup
Search package inventory across systems, then return here. Create a ticket on systems the matcher missed.
Suggestions: libxml2 · libxml2-devel · libxml2-python
| System | Matches | Ticket for CVE-2021-3517 | |
|---|---|---|---|
| morris | libxml2-python 2.9.1 | new open | |
| mufasa | libxml2-python 2.9.1 | new open |
Same product CVEs in your queue
Other open tickets that look like the same product. Closed tickets are omitted unless they are already pegged to this CVE.
| CVE | CVSS | KEV | Systems | Status | Matched | Already related | |
|---|---|---|---|---|---|---|---|
| CVE-2021-3518 | 8.8 | Archive, Janus, Library, Saiph, morris … | new | libxml2-devel | — | ||
| CVE-2022-40304 | 7.8 | Archive, Janus, Library, Saiph, morris … | new | libxml2-devel | — | ||
| CVE-2024-34459 | 7.5 | Archive, Janus, Library, Saiph, morris … | new | libxml2-devel | — | ||
| CVE-2022-23308 | 7.5 | Archive, Janus, Library, Saiph, morris … | new | libxml2-devel | — | ||
| CVE-2022-40303 | 7.5 | Archive, Janus, Library, Saiph, morris … | new | libxml2-devel | — | ||
| CVE-2024-25062 | 7.5 | Archive, Janus, Library, Saiph, morris … | new | libxml2-devel | — |
Related CVE (same fix)
Point this ticket’s CVE at a higher-priority / same-fix primary so you only triage one.
Host OS / kernel
OS
CloudLinux release 7.9 (Boris Yegorov)
(7.9)
· cloudlinux
Arch
x86_64
kernel_release
uname -r → 3.10.0-962.3.2.lve1.5.89.el7.x86_64kernel_version
uname -v → #1 SMP Thu Jul 9 15:55:31 UTC 2026For Linux kernel CVEs, kernel_version (Debian packaging / build string) often decides fixed vs not; kernel_release is used for upstream NVD range compares.
Same CVE on other hosts
Open the ticket for this CVE on another system.
| System | Status | Priority | Updated | |
|---|---|---|---|---|
| mufasa | new | 8.1 | 2026-10-20T10:18:50Z | Open |
| Library | new | 2.08 | 2026-10-20T10:18:50Z | Open |
| Archive | new | 0.79 | 2026-10-20T10:18:50Z | Open |
| Janus | new | 0.79 | 2026-10-20T10:18:50Z | Open |
| Saiph | new | 0.79 | 2026-10-20T10:18:50Z | Open |
Description
There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.
Update status
Add note only
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1954232
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/
- https://security.gentoo.org/glsa/202107-05
- https://security.netapp.com/advisory/ntap-20210625-0002/
- https://security.netapp.com/advisory/ntap-20211022-0004/
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1954232
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
NVD: CVE-2021-3517