CVE-2020-12845

Exp

Cherokee 0.4.27 to 1.2.104 is affected by a denial of service due to a NULL pointer dereferences. A remote unauthenticated attacker can crash the server by sending an HTTP request to protected resources using a malformed Authorization header that is mishandled during a cherokee_buffer_add call within cherokee_validator_parse_basic or cherokee_validator_parse_digest.

Published: 2020-07-27 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-12845 is rated High Exploit Risk (78.5/100): CVSS High severity, with high exploitation likelihood (EPSS 7.74%, 92th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.34% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-12845

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-12845

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-15 6.40% 7.74% +1.34%
2 2026-03-05 5.91% 6.40% +0.49%
3 2026-03-02 — 5.91% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-12845

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2020-12845

OS Trackers for CVE-2020-12845

vendor priority summary link
gentoo low CVE-2020-12845: 1 GLSA(s) (202012-09), 1 atom(s) (www-servers/cherokee); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-12845
ubuntu medium CVE-2020-12845 medium priority: Ubuntu including 1 source packages (cherokee), 6 status rows across 6 suites (bionic, focal, precise, trusty, upstream, xenial): DNE 4, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2020-12845

Affected software / configurations for CVE-2020-12845

Vendor Product Version Raw CPE
cherokee-project cherokee >= 0.4.27, <= 1.2.104 cpe:2.3:a:cherokee-project:cherokee:*:*:*:*:*:*:*:*

References for CVE-2020-12845

cvelogic Threat Intelligence