9.8

CVE-2024-49369: debian debian_linux Improper Certificate Validation

CVSS: 9.8v3.1CriticalAnalyzed
AliasesopenSUSE-SU-2024:0371-1openSUSE-SU-2024:0372-1UBUNTU-CVE-2024-49369
Published 12-11-2024Last modified 03-11-2025
Open JSON

Vulnerability summary

CVE-2024-49369 is a critical (CVSS 9.8) Improper Certificate Validation vulnerability in debian debian_linux. EPSS estimates a 2.92% chance of exploitation in the next 30 days, higher than 86.8% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
2.92%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DLA-3953-1

Timeline

  1. 12-11-2024
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. The TLS certificate validation in all Icinga 2 versions starting from 2.4.0 was flawed, allowing an attacker to impersonate both trusted cluster nodes as well as any API users that use TLS client certificates for authentication (ApiUser objects with the client_cn attribute set). This vulnerability has been fixed in v2.14.3, v2.13.10, v2.12.11, and v2.11.12.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

2.92%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

0.00 pp

From 2.92% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.92%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Opensuse3 products
  • icinga2&distro=openSUSE Leap 15.5< 2.13.10-bp155.3.3.1
  • icinga2&distro=openSUSE Leap 15.6< 2.13.10-bp156.4.3.1
  • icinga2&distro=openSUSE Tumbleweed< 2.14.3-1.1
Debian2 products
Icinga2 products
  • icinga≥ 2.4.0, < 2.11.12 | ≥ 2.12.0, < 2.12.11 | ≥ 2.13.0, < 2.13.10 | ≥ 2.14.0, < 2.14.3
  • icinga2≥ 2.4.0, < 2.11.12 | ≥ 2.12.0, < 2.12.11 | ≥ 2.13.0, < 2.13.10 | ≥ 2.14.0, < 2.14.3
Suse2 products
  • icinga2&distro=SUSE Package Hub 15 SP5< 2.13.10-bp155.3.3.1
  • icinga2&distro=SUSE Package Hub 15 SP6< 2.13.10-bp156.4.3.1
Ubuntu1 product
  • icinga2All versions (No fix recorded)

5 vendors · 10 products

References

17 links
Show all 17 references