SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-15919

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use.

MEDIUM 5.3EPSS 3.56%

Does this matter?

Lower severity and a low EPSS score (3.56%). Track it; it rarely justifies an emergency change on its own.

Description

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'

CVSS 3.1
5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
3.56% probability · 89th percentile
CISA KEV
Not listed
Weakness
CWE-200
Affected
openbsd/openssh · netapp/cloud backup · netapp/data ontap edge · netapp/ontap select deploy · netapp/steelstore · netapp/cn1610 firmware
Source
cve@mitre.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.