7.5

CVE-2023-30570: libreswan Uncontrolled Resource Consumption

Modified
AliasesRHSA-2023:2120RHSA-2023:2121RHSA-2023:2122
Published 28-05-2023Last modified 14-01-2025

Vulnerability summary

CVE-2023-30570 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in libreswan. EPSS estimates a 1.19% chance of exploitation in the next 30 days, higher than 67.8% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4
MGASA-2024-0085RHBA-2024:11505RHBA-2024:11525RHBA-2024:11565

Timeline

  1. 28-05-2023
    PublishedVulnerability first disclosed.
  2. 14-01-2025
    Last modifiedVulnerability information updated.

Description

pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and daemon crash) via unauthenticated IKEv1 Aggressive Mode packets. The earliest affected version is 3.28.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

1.19%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.19% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat3 products
  • libreswan< 0:4.6-3.el9_1.1 | < 0:4.6-3.el9_0.1 | < 0:4.5-1.el8_7.1 | < 0:4.5-1.el8_6.1 | < 0:3.29-7.el8_2.2 | < 0:4.3-6.el8_4.1 | < 0:3.29-7.el8_1.2
  • libreswan-debuginfo< 0:4.6-3.el9_1.1 | < 0:4.6-3.el9_0.1 | < 0:4.5-1.el8_7.1 | < 0:4.5-1.el8_6.1 | < 0:3.29-7.el8_2.2 | < 0:4.3-6.el8_4.1 | < 0:3.29-7.el8_1.2
  • libreswan-debugsource< 0:4.6-3.el9_1.1 | < 0:4.6-3.el9_0.1 | < 0:4.5-1.el8_7.1 | < 0:4.5-1.el8_6.1 | < 0:3.29-7.el8_2.2 | < 0:4.3-6.el8_4.1 | < 0:3.29-7.el8_1.2
Alpine1 product
  • libreswan≥ 3.28, < 4.9-r2
Debian1 product
  • libreswan< 4.10-2+deb12u1 | < 4.11-1
Libreswan1 product
Ubuntu1 product
  • libreswanAll versions (No fix recorded)

5 vendors · 7 products

References

25 links
Show all 25 references