CVE-2021-44228

critical-risk
Published 2021-12-10

Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.

Do I need to act?

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94.4% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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3 public exploits available
51183, 50592, 50590
+
Fix available
Upgrade to: 38513a7d57343881f7bf58f37e67d6a87e0a47c5, ad361d2e517e765f69db464d9407ac2dd80bc93e, c30a1398a6697fb832c650870c44284d0052103e, 4eb3cf16d99f0332878b1b57f2b22b0fd737602f, 6b788facd3479dfe9052b3a5e13f6603dce8c16f, 6b788facd3479dfe9052b3a5e13f6603dce8c16f, 6b788facd3479dfe9052b3a5e13f6603dce8c16f, 901c8714622056af05d757d9360b1d384604a4da, 6b788facd3479dfe9052b3a5e13f6603dce8c16f
10
CVSS 10.0/10 Critical
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Cisco Debian Apache Apple Siemens Intel Sonicwall Fedoraproject Netapp Bentley Snowsoftware Percussion

References (103)

Third Party Advisory http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Exe...
Third Party Advisory http://packetstormsecurity.com/files/165260/VMware-Security-Advisory-2021-0028.h...
Exploit http://packetstormsecurity.com/files/165261/Apache-Log4j2-2.14.1-Information-Dis...
Exploit http://packetstormsecurity.com/files/165270/Apache-Log4j2-2.14.1-Remote-Code-Exe...
Third Party Advisory http://packetstormsecurity.com/files/165281/Log4j2-Log4Shell-Regexes.html
Third Party Advisory http://packetstormsecurity.com/files/165282/Log4j-Payload-Generator.html
Third Party Advisory http://packetstormsecurity.com/files/165306/L4sh-Log4j-Remote-Code-Execution.htm...
Third Party Advisory http://packetstormsecurity.com/files/165307/Log4j-Remote-Code-Execution-Word-Byp...
Broken Link http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.html
Exploit http://packetstormsecurity.com/files/165371/VMware-Security-Advisory-2021-0028.4...
Exploit http://packetstormsecurity.com/files/165532/Log4Shell-HTTP-Header-Injection.html
Exploit http://packetstormsecurity.com/files/165642/VMware-vCenter-Server-Unauthenticate...
Exploit http://packetstormsecurity.com/files/165673/UniFi-Network-Application-Unauthenti...
Third Party Advisory http://packetstormsecurity.com/files/167794/Open-Xchange-App-Suite-7.10.x-Cross-...
Exploit http://packetstormsecurity.com/files/167917/MobileIron-Log4Shell-Remote-Command-...
Third Party Advisory http://packetstormsecurity.com/files/171626/AD-Manager-Plus-7122-Remote-Code-Exe...
Exploit http://seclists.org/fulldisclosure/2022/Dec/2
Mailing List http://seclists.org/fulldisclosure/2022/Jul/11
Mailing List http://seclists.org/fulldisclosure/2022/Mar/23
Mailing List http://www.openwall.com/lists/oss-security/2021/12/10/1
and 83 more references
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93
/ 100
critical-risk
Severity 33/34 · Critical
Exploitability 27/34 · High
Exposure 33/34 · Critical