CVE-2007-1497 json
nf_conntrack in netfilter in the Linux kernel before 2.6.20.3 does not set nfctinfo during reassembly of fragmented packets, which leaves t…
published 2007-03-16 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-1491
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.1%
- EPSS 3.1% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
nf_conntrack in netfilter in the Linux kernel before 2.6.20.3 does not set nfctinfo during reassembly of fragmented packets, which leaves the default value as IP_CT_ESTABLISHED and might allow remote attackers to bypass certain rulesets using IPv6 fragments.
Patch / fix
- kernel RHEL 5 2.6.18-8.1.4.el5
- kernel-PAE RHEL 5 2.6.18-8.1.4.el5
- kernel-xen RHEL 5 2.6.18-8.1.4.el5
- kernel-kdump RHEL 5 2.6.18-8.1.4.el5
- kernel-debuginfo-common RHEL 5 2.6.18-8.1.4.el5
red hat advisories RHSA-2007:0347
- secunia.com/advisories/24492 advisory
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2007-1497 updated
IPv6 fragments bypass in nf_conntrack netfilter code
-
Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-8.1.4.el5, kernel-PAE 2.6.18-8.1.4.el5, kernel-xen 2.6.18-8.1.4.el5, kernel-kdump 2.6.18-8.1.4.el5, kernel-debuginfo-common 2.6.18-8.1.4.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-8.1.4.el5, kernel-PAE 2.6.18-8.1.4.el5, kernel-xen 2.6.18-8.1.4.el5, kernel-kdump 2.6.18-8.1.4.el5, kernel-debuginfo-common 2.6.18-8.1.4.el5fixed: vendor fix RHSA-2007:0347
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
3.11% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Technology feeds
References
-
secunia.com
/advisories/24492
third-party-advisory, patch, vendor-advisory
-
redhat.com
/support/errata/RHSA-2007-0347.html
vendor-advisory
-
ubuntu.com
/usn/usn-464-1
vendor-advisory
-
novell.com
/linux/security/advisories/2007_43_kernel.html
vendor-advisory
-
mandriva.com
/security/advisories?name=MDKSA-2007:171
vendor-advisory
-
debian.org
/security/2007/dsa-1289
vendor-advisory
-
mandriva.com
/security/advisories?name=MDKSA-2007:196
vendor-advisory
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10457
vdb-entry, signature
- kernel.org /pub/linux/kernel/v2.6/ChangeLog-2.6.20.3
-
vupen.com
/english/advisories/2007/0944
vdb-entry
-
secunia.com
/advisories/25288
third-party-advisory
-
secunia.com
/advisories/26620
third-party-advisory
-
secunia.com
/advisories/25228
third-party-advisory
-
secunia.com
/advisories/25961
third-party-advisory
-
secunia.com
/advisories/25392
third-party-advisory
-
osvdb.org
/33028
vdb-entry
-
securityfocus.com
/bid/23976
vdb-entry
Sources
- CVE List CVE-2007-1497
- NVD CVE-2007-1497
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.