CVE-2021-45105

תיאור (מקור, אנגלית)

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) 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, 2.12.3, and 2.3.1.

מדדים

CVSS 3.1

5.9 (MEDIUM) מקור הציון: NVD CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — סבירות ניצול

100% (אחוזון 100) נכון ל-28/10/2026

CWE

CWE-20, CWE-674

מוצרים מושפעים

apache: log4j; netapp: cloud manager; debian: debian linux; sonicwall: email security; sonicwall: network security manager; sonicwall: web application firewall; sonicwall: 6bk1602-0aa12-0tp0 firmware; sonicwall: 6bk1602-0aa12-0tp0; sonicwall: 6bk1602-0aa22-0tp0 firmware; sonicwall: 6bk1602-0aa22-0tp0; sonicwall: 6bk1602-0aa32-0tp0 firmware; sonicwall: 6bk1602-0aa32-0tp0; sonicwall: 6bk1602-0aa42-0tp0 firmware; sonicwall: 6bk1602-0aa42-0tp0; sonicwall: 6bk1602-0aa52-0tp0 firmware

קישורים

• https://logging.apache.org/log4j/2.x/security.html Release NotesVendor Advisory
• https://logging.apache.org/log4j/2.x/security.html Release NotesVendor Advisory
• https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
• https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
• https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
• https://www.oracle.com/security-alerts/cpujan2022.html PatchThird Party Advisory
• http://www.openwall.com/lists/oss-security/2021/12/19/1 Mailing ListMitigationThird Party Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf Third Party Advisory
• https://cert-portal.siemens.com/productcert/pdf/ssa-501673.pdf Third Party Advisory
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0032 Third Party Advisory