Home/CVE/libcurl would reuse a previously created connection even when a TLS or SSHrelated option had been changed that should ha
CVE

CVE-2022-27782

libcurl would reuse a previously created connection even when a TLS or SSHrelated option had been changed that should ha

libcurl would reuse a previously created connection even when a TLS or SSHrelated option had been changed that should have prohibited reuse.libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse if one of them matches the setup. However, several TLS andSSH settings were left out from the configuration match checks, making themmatch too easily.

HIGH · CVSS 7.5 EPSS 0.00469
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules7 YARA rules0

Weakness Classification

Affected Products & Versions

5
haxx curl< 7.83.1
debian linuxall versions
splunk universal forwarder>= 8.2.0 and < 8.2.12
splunk universal forwarder>= 9.0.0 and < 9.0.6

Public Exploits & PoCs

1
pochackerone.com · 1555796hackerone.com

Sigma Hunt Rules

7
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Download and Execute Pattern via Curl/Wget
producthighSuspicious File Download From File Sharing Domain Via Curl.EXE
producthighSuspicious File Download From IP Via Curl.EXE
producthighCurl Download And Execute Combination
producthighSuspicious Curl.EXE Download
productmediumSuspicious Curl File Upload - Linux

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Jun 2022 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

15
suse-csafopenSUSE-SU-2024:12062-1
siemens-csafSSA-398330
siemens-csafSSA-146325
suse-csafSUSE-SU-2022:2829-1
suse-csafSUSE-SU-2022:2813-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.debian.org/security/2022/dsa-5197Mailing ListThird Party Advisory
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