Auth bypass in ASUS Rt-Ac53
CVE-2017-6549
Session hijack vulnerability in httpd on ASUS RT-N56U, RT-N66U, RT-AC66U, RT-N66R, RT-AC66R, RT-AC68U, RT-AC68R, RT-N66W, RT-AC66W, RT-AC87R, RT-AC87U, RT-AC51U, RT-AC68P, RT-N11P, RT-N12+, RT-N12E B1, RT-AC3200, RT-AC53U, RT-AC1750, RT-AC1900P, RT-N300, and RT-AC750 routers with firmware before 3.0.0.4.380.7378; RT-AC68W routers with firmware before 3.0.0.4.380.7266; and RT-N600, RT-N12+ B1, RT-N11P B1, RT-N12VP B1, RT-N12E C1, RT-N300 B1, and RT-N12+ Pro routers with firmware before 3.0.0.4.380.9488; and Asuswrt-Merlin firmware before 380.65_2 allows remote attackers to steal any active admin session by sending cgi_logout and asusrouter-Windows-IFTTT-1.0 in certain HTTP headers.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.076 (94.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.076 · newest: 0.076 · change: 0.000
Affected products
- ASUS Rt-Ac53
- ASUS Rt-Ac53 Firmware — versions 3.0.0.4.380.6038
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.exploit-db.com/exploits/41572/ (exploit)
- asuswrt.lostrealm.ca/changelog
- www.securityfocus.com/bid/96938 (vdb-entry)
- bierbaumer.net/security/asuswrt/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-6549?
- CVE-2017-6549 is a high-severity vulnerability in ASUS Rt-Ac53, classified under Improper Authentication. CVSS score: 8.8/10. Published 2017-03-09.
- How severe is CVE-2017-6549?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2017-6549 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.