Home/CVE/A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4
CVE

CVE-2019-5436

A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4

A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.

HIGH · CVSS 7.8 EPSS 0.15484
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 5% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

12
haxx libcurl>= 7.19.4 and <= 7.64.1
opensuse leapall versions
fedoraproject fedoraall versions
debian linuxall versions
f5 traffix signaling delivery controller>= 5.0.0 and <= 5.1.0
netapp hci management nodeall versions
netapp solidfireall versions
netapp steelstore cloud integrated storageall versions
⚠

Public Exploits & PoCs

1
poccurl.haxx.se · CVE-2019-5436.htmlcurl.haxx.se
◈

Sigma Hunt Rules

1
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.
productmediumPotential DLL Sideloading Of Libcurl.DLL Via GUP.EXE
▣

Scoring & Timeline

7.8
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 NVD28 May 2019 · 07:29 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
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

17
suse-csafopenSUSE-SU-2024:10582-1
siemens-csafSSA-398330
rhsaRHBA-2020:1540Moderate
rhsaRHBA-2020:1539Important
rhsaRHSA-2020:1792Moderate
🔗

References & Sources

13
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00008.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00017.htmlMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2019/09/11/6Mailing ListPatchThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SMG3V4VTX2SE3EW3HQTN3DDLQBTORQC2/
https://seclists.org/bugtraq/2020/Feb/36Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202003-29Third Party Advisory
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