Medium severity · published May 9, 2020
CVE-2019-20795
iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c
4.4
CVSS
0.4%
EPSS
No
On KEV
Description
iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, although not a default, are sometimes a configuration option offered to end users. Even when setuid is used, other factors (such as C library configuration) may block exploitability.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IP
Iproute2 · Iproute2 Project
before 5.1.0 · source: NVD
UL
Ubuntu Linux · Canonical
18.04 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-20795
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-20795
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1171452
Patch
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=9bf2c538a0eb10d66e2365a655bf6c52f5ba3d10
Third Party Advisory
https://security.gentoo.org/glsa/202008-06
Third Party Advisory
https://usn.ubuntu.com/4357-1/
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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