Known exploited vulnerability
CVE-2018-14847
The short answer
CVE-2018-14847 affects n/a n/a and is rated critical (CVSS 9.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-12-01: attackers are using it, so patch it first.
What it is
MikroTik RouterOS through 6.42 allows unauthenticated remote attackers to read arbitrary files and remote authenticated attackers to write arbitrary files due to a directory traversal vulnerability in the WinBox interface.
Weakness: CWE-22.
Severity
9.1 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploited (CISA KEV)
Yes, since Dec 1, 2021
Federal due date Jun 1, 2022
EPSS, next 30 days
96%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- None
What CISA says to do
Apply updates per vendor instructions.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- github.com/BasuCert/WinboxPoC ExploitMitigationThird Party Advisory
- github.com/BigNerd95/WinboxExploit ExploitMitigationThird Party Advisory
- github.com/tenable/routeros/blob/master/bug_hunting_in_routeros_derbycon_2018.pdf Broken LinkExploitThird Party Advisory
- github.com/tenable/routeros/tree/master/poc/bytheway ExploitThird Party Advisory
- github.com/tenable/routeros/tree/master/poc/cve_2018_14847 ExploitThird Party Advisory
- mikrotik.com/supportsec/winbox-vulnerability Vendor Advisory
- n0p.me/winbox-bug-dissection/ ExploitThird Party Advisory
- www.exploit-db.com/exploits/45578/ ExploitThird Party AdvisoryVDB Entry
- github.com/BasuCert/WinboxPoC ExploitMitigationThird Party Advisory
- github.com/BigNerd95/WinboxExploit ExploitMitigationThird Party Advisory
- github.com/tenable/routeros/blob/master/bug_hunting_in_routeros_derbycon_2018.pdf Broken LinkExploitThird Party Advisory
- github.com/tenable/routeros/tree/master/poc/bytheway ExploitThird Party Advisory
Questions
Is CVE-2018-14847 being exploited?
Yes. CISA added CVE-2018-14847 to its Known Exploited Vulnerabilities catalog on 2021-12-01, with a federal remediation due date of 2022-06-01.
How do I fix CVE-2018-14847?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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