Vulnerability CVE-2021-45105
Published: 2021-12-18

Description:
Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0 and 2.12.3.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Netapp -> Cloud manager 
Debian -> Debian linux 
Apache -> Log4j 

 References:
https://logging.apache.org/log4j/2.x/security.html
https://security.netapp.com/advisory/ntap-20211218-0001/
http://www.openwall.com/lists/oss-security/2021/12/19/1
https://www.debian.org/security/2021/dsa-5024
https://www.zerodayinitiative.com/advisories/ZDI-21-1541/
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-log4j-qRuKNEbd
https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf
https://www.kb.cert.org/vuls/id/930724
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032
https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf
https://lists.debian.org/debian-lts-announce/2021/12/msg00017.html
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