Known exploited vulnerability
CVE-2020-12271
The short answer
CVE-2020-12271 affects n/a n/a and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first.
What it is
A SQL injection issue was found in SFOS 17.0, 17.1, 17.5, and 18.0 before 2020-04-25 on Sophos XG Firewall devices, as exploited in the wild in April 2020. This affected devices configured with either the administration (HTTPS) service or the User Portal exposed on the WAN zone. A successful attack may have caused remote code execution that exfiltrated usernames and hashed passwords for the local device admin(s), portal admins, and user accounts used for remote access (but not external Active Directory or LDAP passwords)
Weakness: CWE-89.
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date May 3, 2022
EPSS, next 30 days
43%
Higher than 99% 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
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- community.sophos.com/kb/en-us/135412 Vendor Advisory
- cwe.mitre.org/data/definitions/89.html Third Party Advisory
- news.sophos.com/en-us/2020/04/26/asnarok/ ExploitVendor Advisory
- community.sophos.com/kb/en-us/135412 Vendor Advisory
- cwe.mitre.org/data/definitions/89.html Third Party Advisory
- news.sophos.com/en-us/2020/04/26/asnarok/ ExploitVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12271 US Government Resource
Questions
Is CVE-2020-12271 being exploited?
Yes. CISA added CVE-2020-12271 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2020-12271?
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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