Improper authentication in Gnome Projectr gdm
Priority LOW 29CWE-287Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 fixed, 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-287.
Summary
A vulnerability was discovered in gdm before 3.31.4. When timed login is enabled in configuration, an attacker could bypass the lock screen by selecting the timed login user and waiting for the timer to expire, at which time they would gain access to the logged-in user's session.
Why it matters now
EPSS 0.00508 43rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 3 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| The Gnome Projectr | gdm | 3.31.4 | — | No fix listed | CNA |
- gdm VendorThe Gnome Projectr Affected 3.31.4 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnome:gnome_display_manager:*:*:*:*:*:*:*:* | before 3.31.4 | Vulnerable | GNOME |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | 18.10 | Vulnerable | Canonical |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
- cpe:2.3:a:gnome:gnome_display_manager:*:*:*:*:*:*:*:* Versions before 3.31.4 Vulnerable ·GNOME
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* Versions 18.10 Vulnerable ·Canonical
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2020:1766 Released 2020-04-28 · Red Hat rating ModerateGNOME security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 8) LibRaw-0.19.5-1.el8, LibRaw-devel-0.19.5-1.el8, accountsservice-devel-0.6.50-8.el8 +14
- Red Hat Enterprise Linux AppStream (v. 8) LibRaw-0.19.5-1.el8, accountsservice-0.6.50-8.el8, accountsservice-libs-0.6.50-8.el8 +47
- Red Hat Enterprise Linux BaseOS (v. 8) gsettings-desktop-schemas-3.32.0-4.el8, libxslt-1.1.32-4.el8, mozjs52-52.9.0-2.el8 +1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2020:1766 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:1766 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2020:1766 |
Not affected: 1 product
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2019-3825
- 2026-10-03 Alias added: GHSA-pfhm-wwqj-c296
References
Advisory 1
Sources
- CVE-2019-3825 · CVE Program
- CVE-2019-3825 · NVD
- FIRST EPSS
- GHSA-pfhm-wwqj-c296 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-3825 · Red Hat security data · CC BY 4.0
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