Home/CVE/Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function
CVE

CVE-2018-16842

Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function

Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service.

MEDIUM · CVSS 4.4 EPSS 0.00162
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
CWE-125Out-of-bounds Read
▤

Affected Products & Versions

3
haxx curl>= 7.14.1 and <= 7.61.1
canonical ubuntu linuxall versions
debian linuxall versions
◈

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

4.4
MEDIUM · CVSS v3.0 · secalert@redhat.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 NVD31 Oct 2018 · 07:29 PM
CVSS VectorCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
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

11
suse-csafopenSUSE-SU-2024:10582-1
rhsaRHBA-2020:0547Important
rhsaRHSA-2019:1543Low
suse-csafSUSE-SU-2019:0339-1
suse-csafSUSE-SU-2018:3681-1
🔗

References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securitytracker.com/id/1042014Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16842Issue TrackingThird Party Advisory
https://curl.haxx.se/docs/CVE-2018-16842.htmlPatchVendor Advisory
https://github.com/curl/curl/commit/d530e92f59ae9bb2d47066c3c460b25d2ffeb211PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00005.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201903-03Third Party Advisory
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