CVE-2017-7562

MEDIUM
New! CVE Severity Now Using CVSS v3

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Description

An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.

References

http://www.securityfocus.com/bid/100511

https://access.redhat.com/errata/RHSA-2018:0666

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562

https://github.com/krb5/krb5/pull/694

https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196

https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2

https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d

Details

Source: MITRE

Published: 2018-07-26

Updated: 2020-01-21

Type: CWE-287

Risk Information

CVSS v2

Base Score: 4

Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8

Severity: MEDIUM

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM

Tenable Plugins

View all (12 total)

IDNameProductFamilySeverity
127186NewStart CGSL CORE 5.04 / MAIN 5.04 : krb5 Multiple Vulnerabilities (NS-SA-2019-0025)NessusNewStart CGSL Local Security Checks
medium
123853EulerOS Virtualization 2.5.3 : krb5 (EulerOS-SA-2019-1167)NessusHuawei Local Security Checks
medium
119897EulerOS Virtualization 2.5.2 : krb5 (EulerOS-SA-2018-1408)NessusHuawei Local Security Checks
medium
118755EulerOS 2.0 SP3 : krb5 (EulerOS-SA-2018-1361)NessusHuawei Local Security Checks
medium
118737EulerOS 2.0 SP2 : krb5 (EulerOS-SA-2018-1354)NessusHuawei Local Security Checks
medium
117342Amazon Linux AMI : krb5 (ALAS-2018-1010)NessusAmazon Linux Local Security Checks
medium
110184SUSE SLES12 Security Update : krb5 (SUSE-SU-2018:1425-1)NessusSuSE Local Security Checks
medium
109689Amazon Linux 2 : krb5 (ALAS-2018-1010)NessusAmazon Linux Local Security Checks
medium
109450Scientific Linux Security Update : krb5 on SL7.x x86_64 (20180410)NessusScientific Linux Local Security Checks
medium
109370CentOS 7 : krb5 (CESA-2018:0666)NessusCentOS Local Security Checks
medium
109104Oracle Linux 7 : krb5 (ELSA-2018-0666)NessusOracle Linux Local Security Checks
medium
108983RHEL 7 : krb5 (RHSA-2018:0666)NessusRed Hat Local Security Checks
medium