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Fencer Intel
medium 5.9

CVE-2021-39365 json

In GNOME grilo though 0.3.13, grl-net-wc.c does not enable TLS certificate verification on the SoupSessionAsync objects it creates, leaving…

published 5y ago modified 4mo ago also EUVD-2021-25726

cvss
5.9
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

In GNOME grilo though 0.3.13, grl-net-wc.c does not enable TLS certificate verification on the SoupSessionAsync objects it creates, leaving users vulnerable to network MITM attacks. NOTE: this is similar to CVE-2016-20011.

Patch / fix

  • grilo Debian 14, Debian 13, Debian 12 0.3.13-1.1

debian advisories DEBIAN-CVE-2021-39365

  • grilo Ubuntu 18.04 LTS 0.3.4-1ubuntu0.1
  • grilo Ubuntu 20.04 LTS 0.3.12-1ubuntu0.1
  • grilo Ubuntu 22.04 LTS 0.3.13-1.1
  • grilo Ubuntu Pro 16.04 LTS 0.2.15-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2021-39365

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • grilo RHEL 8 0.3.6-3.el8

red hat advisories RHSA-2021:4339

  • grilo SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +7 more 0.3.4-3.3.1
  • grilo SLE Workstation Extension 15 SP3, SLE Workstation Extension 15 SP2, SLE Module for Desktop Applications 15 SP3 +1 more 0.3.12-3.3.1
  • grilo SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +1 more 0.3.2-7.3.1

suse advisories SUSE-SU-2021:3295-1SUSE-SU-2021:3194-1SUSE-SU-2021:3003-1

  • grilo openSUSE Leap 15.2 0.3.12-lp152.2.3.1
  • grilo openSUSE Leap 15.3 0.3.12-3.3.1

opensuse advisories openSUSE-SU-2021:1312-1openSUSE-SU-2021:3194-1

  • grilo AlmaLinux 8 0.3.6-3.el8

almalinux advisories ALSA-2021:4339

  • grilo Rocky Linux 8 0.3.6-3.el8

rocky linux advisories RLSA-2021:4339

  • grilo Arch Linux 0.3.14-1

arch linux advisories AVG-2311

Is CVE-2021-39365 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-39365 updated cvss 7.5

grilo: missing TLS certificate verification

  • Red Hat Enterprise Linux 7 grilo, compat-grilo02
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 8) grilo-devel 0.3.6-3.el8, grilo-debuginfo 0.3.6-3.el8, grilo-debugsource 0.3.6-3.el8 Red Hat Enterprise Linux AppStream (v. 8) grilo 0.3.6-3.el8
    fixed: vendor fix RHSA-2021:4339
  • Red Hat Enterprise Linux 9 grilo
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.87% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-295 Improper Certificate Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.