CVE-2019-12210

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.1%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
42
EG Risk 42/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation2% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
2.1%
EPSS %ILE
80th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 4, 2019

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Sep 11, 2026
Patch available. Sources: github_commit.
github_commit

commit 18b1914e32b7 (Yubico/pam-u2f)

Fix landed in Yubico/pam-u2f commit 18b1914e32b7 — awaiting tagged release

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

Release Notes

https://developers.yubico.com/pam-u2f/Release_Notes.html
generic

oss-security - pam-u2f: CVE-2019-12210: debug_file file descriptor leak, CVE-2019-12209: symlink attack on u2f_keys leading to possible information leak

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
pam-u2f—
  • every version up to 1.0.8-1: fixed in 1.0.8-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
pam-u2f—
  • every version up to 1.0.8-1: fixed in 1.0.8-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pam-u2f—
  • every version up to 1.0.8-1: fixed in 1.0.8-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pam-u2f—
  • every version up to 1.0.8-1: fixed in 1.0.8-1
—

Data Freshness Timeline

(refreshed 7× in last 7d / 26× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 94 of 159 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 6 repeat rows among the latest 100 are merged into the row they repeat. The 65 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-10 19:55 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  2. 2026-10-09 20:03 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  3. 2026-10-08 16:37 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  4. 2026-10-07 23:42 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  5. 2026-10-06 15:12 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  6. 2026-10-05 17:39 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  7. 2026-10-04 23:18 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  8. 2026-10-03 14:21 UTCEPSS rescoreEPSS 2.1% · 80th percentile
  9. 2026-09-30 14:59 UTCEPSS rescoreEPSS 1.8% · 78th percentile
  10. 2026-09-30 10:09 UTCEG score recompute
  11. 2026-09-28 13:46 UTCEPSS rescoreEPSS 1.8% · 78th percentile
  12. 2026-09-28 04:32 UTCOSV refresh
  13. 2026-09-27 13:40 UTCEPSS rescoreEPSS 1.8% · 78th percentile
  14. 2026-09-26 15:53 UTCEPSS rescoreEPSS 1.8% · 78th percentile
  15. 2026-09-26 00:20 UTCEPSS rescoreEPSS 1.8% · 78th percentile
  16. 2026-09-24 13:59 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  17. 2026-09-23 13:43 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  18. 2026-09-21 20:27 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  19. 2026-09-20 20:10 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  20. 2026-09-18 19:22 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  21. 2026-09-17 19:22 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  22. 2026-09-16 14:04 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  23. 2026-09-15 03:05 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  24. 2026-09-13 16:42 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  25. 2026-09-12 14:56 UTCEPSS rescoreEPSS 1.9% · 78th percentile
Show 69 more
  1. 2026-09-11 14:48 UTCEPSS rescoreEPSS 1.9% · 78th percentile
  2. 2026-09-08 21:55 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  3. 2026-09-08 10:44 UTCOSV refresh
  4. 2026-09-07 15:57 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  5. 2026-09-06 13:44 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  6. 2026-09-05 15:24 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  7. 2026-09-04 13:56 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  8. 2026-09-04 05:02 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  9. 2026-09-02 14:07 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  10. 2026-09-01 03:32 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  11. 2026-08-30 19:13 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  12. 2026-08-30 01:18 UTCEPSS rescoreEPSS 1.7% · 74th percentile
  13. 2026-08-28 21:36 UTCEPSS rescoreEPSS 1.7% · 74th percentile
  14. 2026-08-27 14:21 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  15. 2026-08-26 14:42 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  16. 2026-08-25 13:45 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  17. 2026-08-21 23:45 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  18. 2026-08-21 21:14 UTCOSV refresh
  19. 2026-08-20 22:51 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  20. 2026-08-19 17:00 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  21. 2026-08-18 13:44 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  22. 2026-08-17 13:43 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  23. 2026-08-16 14:52 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  24. 2026-08-16 02:10 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  25. 2026-08-15 01:26 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  26. 2026-08-13 21:56 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  27. 2026-08-12 13:47 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  28. 2026-08-09 13:43 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  29. 2026-08-08 16:33 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  30. 2026-08-07 16:23 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  31. 2026-08-06 13:43 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  32. 2026-08-06 03:54 UTCOSV refresh
  33. 2026-08-05 19:13 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  34. 2026-08-04 15:05 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  35. 2026-08-04 10:33 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  36. 2026-08-03 10:31 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  37. 2026-08-02 02:23 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  38. 2026-08-01 04:12 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  39. 2026-07-30 16:24 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  40. 2026-07-30 01:27 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  41. 2026-07-28 15:32 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  42. 2026-07-26 14:51 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  43. 2026-07-25 14:14 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  44. 2026-07-24 14:14 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  45. 2026-07-23 14:15 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  46. 2026-07-23 01:39 UTCEG score recompute
  47. 2026-07-22 22:19 UTCEG score recompute
  48. 2026-07-22 14:05 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  49. 2026-07-21 15:22 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  50. 2026-07-20 17:04 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  51. 2026-07-20 15:32 UTCOSV refresh
  52. 2026-07-19 14:28 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  53. 2026-07-19 02:26 UTCEPSS rescoreEPSS 1.9% · 77th percentile
  54. 2026-07-18 10:01 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  55. 2026-07-16 16:59 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  56. 2026-07-15 16:55 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  57. 2026-07-13 22:27 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  58. 2026-07-12 05:43 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  59. 2026-07-11 08:24 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  60. 2026-07-09 19:06 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  61. 2026-07-08 15:11 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  62. 2026-07-07 13:42 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  63. 2026-07-06 16:25 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  64. 2026-07-06 02:20 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  65. 2026-07-05 02:27 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  66. 2026-07-04 06:28 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  67. 2026-07-03 10:26 UTCOSV refresh
  68. 2026-07-02 16:56 UTCEPSS rescoreEPSS 1.9% · 76th percentile
  69. 2026-07-01 15:03 UTCEPSS rescoreEPSS 1.9% · 76th percentile

Related CVEs(same product)

Frequently asked(5)

What is CVE-2019-12210?
CVE-2019-12210 is a high vulnerability published on June 4, 2019. 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.…
When was the CVE record for CVE-2019-12210 published?
The CVE record for CVE-2019-12210 was published on June 4, 2019. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2019-12210 actively exploited?
CVE-2019-12210 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% probability of exploitation in the next 30 days (80th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2019-12210?
CVE-2019-12210 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2019-12210?
A fix for CVE-2019-12210 is available: update to the fixed version the vendor names in its advisory.

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