Medium severity · published May 26, 2021
CVE-2021-28170
In the Jakarta Expression Language implementation 3.0.3 and earlier, a bug in the ELParserTokenManager enables invalid EL expressions to be evaluated as if they were valid
5.3
CVSS
2.1%
EPSS
No
On KEV
Description
In the Jakarta Expression Language implementation 3.0.3 and earlier, a bug in the ELParserTokenManager enables invalid EL expressions to be evaluated as if they were valid.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WS
WebLogic Server · Oracle
14.1.1.0.0 · source: NVD
CC
Communications Cloud Native Core Policy · Oracle
1.14.0 · source: NVD
JE
Jakarta Expression Language · Eclipse
through 3.0.3 · source: NVD
QU
Quarkus · Quarkus
before 2.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28170
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28170
Exploit
https://github.com/eclipse-ee4j/el-ri/issues/155
Exploit
https://securitylab.github.com/advisories/GHSL-2020-021-jakarta-el/
Patch
https://www.oracle.com/security-alerts/cpuapr2022.html
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