Home/CVE/curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resources that can lead to
CVE

CVE-2020-8177

curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resources that can lead to

curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resources that can lead too overwriting a local file when the -J flag is used.

HIGH · CVSS 7.8 EPSS 0.00019
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-99Improper Control of Resource Identifiers ('Resource Injection')
▤

Affected Products & Versions

18
haxx curl>= 7.20.0 and <= 7.70.0
debian linuxall versions
fujitsu m10-1 firmware< xcp2410
fujitsu m10-4 firmware< xcp2410
fujitsu m10-4s firmware< xcp2410
fujitsu m12-1 firmware< xcp2410
fujitsu m12-2 firmware< xcp2410
fujitsu m12-2s firmware< xcp2410
⚠

Public Exploits & PoCs

1
pochackerone.com · 887462hackerone.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

7.8
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 NVD14 Dec 2020 · 08:15 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

18
siemens-csafSSA-398330
siemens-csafSSA-389290
msrcCVE-2020-8177
rhsaRHSA-2021:0949Important
suse-csafopenSUSE-SU-2020:0908-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatchThird Party Advisory
https://curl.se/docs/CVE-2020-8177.htmlVendor Advisory
https://www.debian.org/security/2021/dsa-4881Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatchThird Party Advisory
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