6.5

CVE-2023-23916: debian debian_linux

CVSS: 6.5v3.1MediumModified
AliasesALPINE-CVE-2023-23916MGASA-2023-0054SUSE-SU-2023:0425-1
Published 23-02-2023Last modified 14-10-2026
Open JSON

Vulnerability summary

CVE-2023-23916 is a medium (CVSS 6.5) vulnerability in debian debian_linux. EPSS estimates a 1.74% chance of exploitation in the next 30 days, higher than 77.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.74%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 9 · Related 6
OPENSUSE-SU-2024:12735-1RHSA-2023:3354RHSA-2023:3460RHSA-2023:4139SUSE-SU-2023:0429-1SUSE-SU-2023:1711-1

Timeline

  1. 23-02-2023
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

1.74%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

+0.04 pp

From 1.70% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.74%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackerone.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Redhat10 products
  • curl< 0:7.61.1-25.el8_7.3 | < 0:7.76.1-19.el9_1.2 | < 0:7.61.1-22.el8_6.6
  • curl-debuginfo< 0:7.61.1-25.el8_7.3 | < 0:7.76.1-19.el9_1.2 | < 0:7.61.1-22.el8_6.6
  • curl-debugsource< 0:7.61.1-25.el8_7.3 | < 0:7.76.1-19.el9_1.2 | < 0:7.61.1-22.el8_6.6
  • curl-minimal< 0:7.76.1-19.el9_1.2
  • curl-minimal-debuginfo< 0:7.61.1-25.el8_7.3 | < 0:7.76.1-19.el9_1.2 | < 0:7.61.1-22.el8_6.6
Netapp5 products
Suse3 products
  • curl&distro=SUSE Linux Enterprise Server 12 SP5< 7.60.0-11.55.1
  • curl&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 7.60.0-11.55.1
  • curl&distro=SUSE Linux Enterprise Software Development Kit 12 SP5< 7.60.0-11.55.1
Debian2 products
  • curl< 7.74.0-1.3+deb11u7 | < 7.64.0-4+deb10u5 | < 7.88.1-1
  • debian_linuxEOL10.0 | 11.0
Alpine1 product
  • curl≥ 7.57.0, < 7.79.1-r5 | ≥ 7.57.0, < 7.80.0-r6 | ≥ 7.57.0, < 7.83.1-r6 | ≥ 7.57.0, < 7.87.0-r2 | ≥ 7.57.0, < 7.88.0-r0
Chainguard1 product
  • libcurl4All versions (No fix recorded)
Fedoraproject1 product
Haxx1 product
  • curl≥ 7.57.0, < 7.88.0
Mageia1 product
  • curl< 7.74.0-1.11.mga8
Splunk1 product
Ubuntu1 product
  • curl< 7.58.0-2ubuntu3.23 | < 7.68.0-1ubuntu2.16 | < 7.81.0-1ubuntu1.8
Wolfi1 product
  • libcurl4All versions (No fix recorded)

12 vendors · 28 products

References

28 links
Show all 28 references