HOME VULNERABILITIESCVE-2019-12210

HIGH

CVE-2019-12210

NVD-CWE-noinfoPublished: June 4, 2019· Updated: Jun 17, 2026

8.1

CVSS v3.1

Official Description

In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation.

Technical Analysis

CVE-2019-12210 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected Vendors & Products

yubico1 product(s)

pam-u2f

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/Yubico/pam-u2f/commit/18b1914e32b74ff52000f10e97067e841e5fff62

PATCHhttps://github.com/Yubico/pam-u2f/commit/18b1914e32b74ff52000f10e97067e841e5fff62

ADVISORYhttp://www.openwall.com/lists/oss-security/2019/06/05/1

ADVISORYhttps://developers.yubico.com/pam-u2f/Release_Notes.html

ADVISORYhttp://www.openwall.com/lists/oss-security/2019/06/05/1

ADVISORYhttps://developers.yubico.com/pam-u2f/Release_Notes.html

All References (10)

→

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html

→

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html

→

http://www.openwall.com/lists/oss-security/2019/06/05/1Exploit · Mailing List · Third Party Advisory

→

https://developers.yubico.com/pam-u2f/Release_Notes.htmlRelease Notes · Vendor Advisory

→

https://github.com/Yubico/pam-u2f/commit/18b1914e32b74ff52000f10e97067e841e5fff62Patch · Third Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html

→

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html

→

http://www.openwall.com/lists/oss-security/2019/06/05/1Exploit · Mailing List · Third Party Advisory

→

https://developers.yubico.com/pam-u2f/Release_Notes.htmlRelease Notes · Vendor Advisory

→

https://github.com/Yubico/pam-u2f/commit/18b1914e32b74ff52000f10e97067e841e5fff62Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2019-12210

CVSS Score8.1 / 10

SeverityHIGH

WeaknessNVD-CWE-noinfo

CISA KEVNo

Affected1 vendor(s)

PublishedJun 4, 2019

Related CVEs (NVD-CWE-noinfo)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2019-12210 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

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