CVE-2020-13777 @ Saiph

"CVE-2020-13777"
"gnutls-openssl27-3.6.7-4+deb10u12"
"gnutls-deb0-28"
"gnutls"
"libcurl3-gnutls-7.64.0-4+deb10u9"
"libgnutls30-3.6.7-4+deb10u12"
"libgnutls-deb0-28-3.3.8-6+deb8u6"
"libgnutls-openssl27-3.6.7-4+deb10u12"
"Am I vulnerable?"

Status

new

Priority

2.61

Match score

4.0

Risk

AuthBypass Remote priv:user

CVSS

7.4 HIGH

Reason

cpe: gnutls; pkgs: gnutls-deb0-28, gnutls-openssl27; version: in-range: gnutls-openssl27-3.6.7-4+deb10u12; risk:auth_bypass; remote

Created

2026-10-15T10:20:43Z

Updated

2026-10-20T10:18:51Z

Package interrogation (copy)

Run on the host — click to copy a command. Debian/apt

Package	Commands
gnutls-openssl27-3.6.7-4+deb10u12
gnutls-deb0-28
gnutls
libcurl3-gnutls-7.64.0-4+deb10u9
libgnutls30-3.6.7-4+deb10u12
libgnutls-deb0-28-3.3.8-6+deb8u6
libgnutls-openssl27-3.6.7-4+deb10u12

Inventory lookup

Search package inventory across systems, then return here. Create a ticket on systems the matcher missed.

Suggestions: gnutls-openssl27 · gnutls-deb0 · gnutls · gnutls-deb0-28

System	Matches	Ticket for CVE-2020-13777
Saiph	libgnutls-openssl27 3.6.7-4+deb10u12	new open
Library	libgnutls-openssl27 3.5.8-5+deb9u6	none

Same product CVEs in your queue

Other open tickets that look like the same product. Closed tickets are omitted unless they are already pegged to this CVE.

CVE	CVSS	Systems	Status	Matched	Already related
CVE-2021-20232	9.8	Saiph	new	gnutls	—
CVE-2021-20231	9.8	Saiph	new	gnutls	—
CVE-2024-0553	7.5	Library, Saiph, morris, mufasa	new	gnutls	—
CVE-2020-24659	7.5	Library, Saiph, morris, mufasa	new	gnutls	—
CVE-2022-2509	7.5	Library, Saiph, morris, mufasa	new	gnutls	—

Related CVE (same fix)

Point this ticket’s CVE at a higher-priority / same-fix primary so you only triage one.

Host OS / kernel

Debian GNU/Linux 10 (buster) (10) · debian

Arch

x86_64

kernel_release

uname -r → 4.19.0-27-amd64

kernel_version

uname -v → #1 SMP Debian 4.19.316-1 (2024-06-25)

For Linux kernel CVEs, kernel_version (Debian packaging / build string) often decides fixed vs not; kernel_release is used for upstream NVD range compares.

Description

GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.

Update status

Add note only

References

NVD: CVE-2020-13777