CVE-2019-18805

Current Description

An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.

Basic Data

PublishedNovember 07, 2019
Last ModifiedNovember 14, 2019
Assignercve@mitre.org
Data TypeCVE
Data FormatMITRE
Data Version4.0
Problem TypeCWE-190
CVE Data Version4.0

Base Metric V2

CVSS 2 - Version2.0
CVSS 2 - Vector StringAV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS 2 - Access VectorNETWORK
CVSS 2 - Access ComplexityLOW
CVSS 2 - AuthenticationNONE
CVSS 2 - Confidentiality ImpactPARTIAL
CVSS 2 - Availability ImpactPARTIAL
CVSS 2 - Base Score7.5
SeverityHIGH
Exploitability Score10.0
Impact Score6.4
Obtain All Privilegefalse
Obtain User Privilegefalse
Obtain Other Privilegefalse

Base Metric V3

No data provided.

Configurations

  • OR - Configuration 1
    Cpe VersionPartVendorProductVersionUpdateEditionLanguageSW EditionTarget SWTarget HWOtherVersion Start IncludingVersion End IncludingVersion Start ExcludingVersion End Excluding
    2.3OSLinuxLinux Kernel********5.0.11

Vulnerable Software List

VendorProductVersions
Linux Linux Kernel *

References

NameSourceURLTags
openSUSE-SU-2019:2503http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.htmlSUSE
openSUSE-SU-2019:2507http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.htmlSUSE
RHSA-2020:0740https://access.redhat.com/errata/RHSA-2020:0740REDHAT
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11MISCMailing List Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19fad20d15a6494f47f85d869f00b11343ee5c78https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19fad20d15a6494f47f85dMISCMailing List Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20191205-0001/https://security.netapp.com/advisory/ntap-20191205-0001/CONFIRM