High severity · published Aug 26, 2021
CVE-2021-29487
Authentication bypass in Octobercms
7.4
CVSS
0.9%
EPSS
No
On KEV
Description
octobercms in a CMS platform based on the Laravel PHP Framework. In affected versions of the october/system package an attacker can exploit this vulnerability to bypass authentication and takeover of and user account on an October CMS server. The vulnerability is exploitable by unauthenticated users via a specially crafted request. This only affects frontend users and the attacker must obtain a Laravel secret key for cookie encryption and signing in order to exploit this vulnerability. The issue has been patched in Build 472 and v1.1.5.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OC
october · octobercms
>= 1.0.471, < 1.0.472; >= 1.1.1, < 1.1.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-29487
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-29487
Patch
https://github.com/octobercms/library/commit/016a297b1bec55d2e53bc889458ed2cb5c3e9374
Patch
https://github.com/octobercms/library/commit/5bd1a28140b825baebe6becd4f7562299d3de3b9
Patch
https://github.com/octobercms/october/security/advisories/GHSA-h76r-vgf3-j6w5
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