CVE-2017-11171

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Bad reference counting in the context of accept_ice_connection() in gsm-xsmp-server.c in old versions of gnome-session up until version 2.29.92 allows a local attacker to establish ICE connections to gnome-session with invalid authentication data (an invalid magic cookie). Each failed authentication attempt will leak a file descriptor in gnome-session. When the maximum number of file descriptors is exhausted in the gnome-session process, it will enter an infinite loop trying to communicate without success, consuming 100% of the CPU. The graphical session associated with the gnome-session process will stop working correctly, because communication with gnome-session is no longer possible.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity55% × 45%
Exploitation0% × 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
0.3%
EPSS %ILE
23rd
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

July 11, 2017

Last Modified

June 17, 2026

References (4)

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
gnome-session—
  • every version up to 2.30.0-1: fixed in 2.30.0-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
gnome-session—
  • every version up to 2.30.0-1: fixed in 2.30.0-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
gnome-session—
  • every version up to 2.30.0-1: fixed in 2.30.0-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
gnome-session—
  • every version up to 2.30.0-1: fixed in 2.30.0-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 155 total refreshes for this CVE.

  1. 2026-10-09 20:02 UTCEPSS rescore
  2. 2026-10-08 16:35 UTCEPSS rescore
  3. 2026-10-08 03:35 UTCOSV refresh
  4. 2026-10-07 23:41 UTCEPSS rescore
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  8. 2026-10-03 14:21 UTCEPSS rescore
  9. 2026-09-30 14:58 UTCEPSS rescore
  10. 2026-09-30 09:22 UTCEG score recompute
  11. 2026-09-28 13:45 UTCEPSS rescore
  12. 2026-09-27 13:40 UTCEPSS rescore
  13. 2026-09-26 15:53 UTCEPSS rescore
  14. 2026-09-24 13:59 UTCEPSS rescore
  15. 2026-09-19 15:36 UTCEPSS rescore
  16. 2026-09-18 19:22 UTCEPSS rescore
  17. 2026-09-18 09:36 UTCOSV refresh
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  20. 2026-09-13 16:42 UTCEPSS rescore
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  24. 2026-09-07 15:56 UTCEPSS rescore
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  1. 2026-09-04 05:01 UTCEPSS rescore
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  3. 2026-09-01 13:48 UTCEPSS rescore
  4. 2026-08-30 19:13 UTCEPSS rescore
  5. 2026-08-30 10:30 UTCOSV refresh
  6. 2026-08-28 21:36 UTCEPSS rescore
  7. 2026-08-27 14:20 UTCEPSS rescore
  8. 2026-08-26 14:41 UTCEPSS rescore
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  19. 2026-08-14 00:34 UTCOSV refresh
  20. 2026-08-13 21:56 UTCEPSS rescore
  21. 2026-08-09 13:42 UTCEPSS rescore
  22. 2026-08-08 16:32 UTCEPSS rescore
  23. 2026-08-07 16:22 UTCEPSS rescore
  24. 2026-08-06 13:42 UTCEPSS rescore
  25. 2026-08-05 19:12 UTCEPSS rescore
  26. 2026-08-04 15:05 UTCEPSS rescore
  27. 2026-08-04 10:32 UTCEPSS rescore
  28. 2026-08-02 02:23 UTCEPSS rescore
  29. 2026-08-01 04:11 UTCEPSS rescore
  30. 2026-07-30 16:24 UTCEPSS rescore
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  32. 2026-07-29 04:33 UTCOSV refresh
  33. 2026-07-28 15:32 UTCEPSS rescore
  34. 2026-07-26 14:51 UTCEPSS rescore
  35. 2026-07-25 14:13 UTCEPSS rescore
  36. 2026-07-23 14:15 UTCEPSS rescore
  37. 2026-07-23 01:26 UTCEG score recompute
  38. 2026-07-22 22:05 UTCEG score recompute
  39. 2026-07-22 14:04 UTCEPSS rescore
  40. 2026-07-20 17:04 UTCEPSS rescore
  41. 2026-07-20 17:04 UTCEPSS rescore
  42. 2026-07-19 14:28 UTCEPSS rescore
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  44. 2026-07-19 02:26 UTCEPSS rescore
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  46. 2026-07-18 10:00 UTCEPSS rescore
  47. 2026-07-16 16:59 UTCEPSS rescore
  48. 2026-07-16 16:59 UTCEPSS rescore
  49. 2026-07-15 16:54 UTCEPSS rescore
  50. 2026-07-15 16:54 UTCEPSS rescore
  51. 2026-07-15 01:56 UTCEPSS rescore
  52. 2026-07-13 22:26 UTCEPSS rescore
  53. 2026-07-13 06:09 UTCEPSS rescore
  54. 2026-07-12 05:43 UTCEPSS rescore
  55. 2026-07-11 20:52 UTCOSV refresh
  56. 2026-07-11 08:24 UTCEPSS rescore
  57. 2026-07-09 19:06 UTCEPSS rescore
  58. 2026-07-08 15:10 UTCEPSS rescore
  59. 2026-07-06 16:24 UTCEPSS rescore
  60. 2026-07-06 02:20 UTCEPSS rescore
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  63. 2026-07-01 15:02 UTCEPSS rescore
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  65. 2026-06-30 23:19 UTCEPSS rescore
  66. 2026-06-30 23:19 UTCEPSS rescore
  67. 2026-06-29 14:03 UTCEPSS rescore
  68. 2026-06-28 14:04 UTCEPSS rescore
  69. 2026-06-28 04:53 UTCEPSS rescore
  70. 2026-06-27 03:05 UTCEPSS rescore
  71. 2026-06-25 13:47 UTCEPSS rescore
  72. 2026-06-25 13:47 UTCEPSS rescore
  73. 2026-06-24 14:02 UTCEPSS rescore
  74. 2026-06-23 21:30 UTCEPSS rescore
  75. 2026-06-23 03:30 UTCOSV refresh

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Frequently asked(5)

What is CVE-2017-11171?
CVE-2017-11171 is a medium vulnerability published on July 11, 2017. Bad reference counting in the context of accepticeconnection() in gsm-xsmp-server.c in old versions of gnome-session up until version 2.29.92 allows a local attacker to establish ICE connections to gnome-session with invalid authentication data (an invalid magic cookie). Each failed authentication…
When was CVE-2017-11171 disclosed?
CVE-2017-11171 was first published on July 11, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-11171 actively exploited?
CVE-2017-11171 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-11171?
CVE-2017-11171 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2017-11171?
A fix for CVE-2017-11171 is available: update to the fixed version the vendor names in its advisory.

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