Home/CVE/Curl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun in the SASL authentication code that may lead to
CVE

CVE-2018-16839

Curl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun in the SASL authentication code that may lead to

Curl versions 7.33.0 through 7.61.1 are vulnerable to a buffer overrun in the SASL authentication code that may lead to denial of service.

MEDIUM · CVSS 4.3 EPSS 0.00346
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-122Heap-based Buffer Overflow
CWE-190Integer Overflow or Wraparound
▤

Affected Products & Versions

3
haxx curl>= 7.33.0 and <= 7.61.1
debian linuxall versions
canonical ubuntu 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

4.3
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 · 06:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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

6
suse-csafopenSUSE-SU-2024:10582-1
rhsaRHSA-2019:1543Low
suse-csafSUSE-SU-2019:0996-1
suse-csafSUSE-SU-2019:0339-1
suse-csafSUSE-SU-2018:3624-1
🔗

References & Sources

9
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/1042012Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16839Issue TrackingThird Party Advisory
https://curl.haxx.se/docs/CVE-2018-16839.htmlPatchVendor Advisory
https://github.com/curl/curl/commit/f3a24d7916b9173c69a3e0ee790102993833d6c5PatchThird Party Advisory
https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
https://lists.debian.org/debian-lts-announce/2018/11/msg00005.htmlMailing ListThird Party Advisory
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