CVE-2017-9798observed exploitation

CVE-2017-9798

82Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actepss 95%

from disclosure to weapon0 days

Published on NVDSep 18

1st PoCSep 18

metasploitSep 18

VulnCheck+1618d

exploitation probability

95%top 1% of all CVEs

observed exploitation

yesVulnCheck

9 public exploit(s)

Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c.

Affected products

Apache Software Foundation · Apache HTTP Server

public PoCs found — 9

exploitdbwww.exploit-db.com/exploits/42745unverified githubgithub.com/brokensound77/OptionsBleed-POC-Scanner★ 19 githubgithub.com/nitrado/CVE-2017-9798★ 3 githubgithub.com/pabloec20/optionsbleed★ 2 githubgithub.com/l0n3rs/CVE-2017-9798★ 0 cve_referencewww.exploit-db.com/exploits/42745/unverified vulncheckvulncheck.com/xdb/c84b62822dafunverified vulncheckvulncheck.com/xdb/43b46934de5eunverified vulncheckvulncheck.com/xdb/b11f158716deunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References