CVE-2020-14305
An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
02 / AFFECTED SOFTWARE
Affected packages
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In nf_conntrack_helper_q931 of nf_conntrack_h323_main.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not required for exploitation.
An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
05 / REFERENCES
Further evidence
- https://android.googlesource.com/kernel/common/+/396ba2fc4f27ef6c44bbc0098bfddf4da76dc4c9
- https://source.android.com/security/bulletin/2021-06-01
- https://bugs.openvz.org/browse/OVZ-7188
- https://bugzilla.redhat.com/show_bug.cgi?id=1850716
- https://patchwork.ozlabs.org/project/netfilter-devel/patch/c2385b5c-309c-cc64-2e10-a0ef62897502%40virtuozzo.com/
- https://security.netapp.com/advisory/ntap-20201210-0004/