CVE-2021-4104: Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2
Apache Software Foundation · Apache Log4j 1.x
Vendor fix available · Affected: Apache Software Foundation Apache Log4j 1.x · Exploitation: likely to be exploited (10% or more)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 99% of scored CVEs
DescriptionCVE.org
JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Apache Software Foundation · Apache Log4j 1.xApache Log4j 1.2 1.2.x
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Likely to be exploited (10% or more). EPSS gives it a 10% or higher chance of exploitation in the next 30 days.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Published
- December 2021
CoverageNo articles yet
No CyberSIXT article names CVE-2021-4104 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-502cwe.mitre.org
- Vendor advisorysecurity.gentoo.org
- Vendor advisorysecurity.gentoo.org
- Vendor advisorysecurity.gentoo.org
- Vendor advisorysecurity.gentoo.org
- cve.org/CVERecord?id=CVE-2021-44228cve.org
- github.com/apache/logging-log4j2/pull/608#issuecomment-990494126github.com
- access.redhat.com/security/cve/CVE-2021-4104access.redhat.com
- Third-party advisorykb.cert.org
- oracle.com/security-alerts/cpujan2022.htmloracle.com
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0033psirt.global.sonicwall.com
- security.netapp.com/advisory/ntap-20211223-0007security.netapp.com
- oracle.com/security-alerts/cpuapr2022.htmloracle.com
2 more references are in the CVE record.