Vulnerability in Apache Log4j
CVE-2020-9488
Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.082 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.081 · newest: 0.082 · change: +0.001
Affected products
- Apache Log4j — versions log4j-core 2.13.0, log4j-core
- Apache Log4j
- Oracle Communications Application Session Controller — versions 3.9m0p1
- Oracle Communications Billing And Revenue Management — versions 7.5.0.23.0, 12.0.0.3.0
- Oracle Communications Eagle FTP Table Base Retrieval — versions 4.5
- Oracle Communications Offline Mediation Controller — versions 12.0.0.3.0
- Oracle Communications Services Gatekeeper — versions 7.0
- Oracle Communications Unified Inventory Management — versions 7.3.0, 7.4.0
- Oracle Data Integrator — versions 12.2.1.3.0, 12.2.1.4.0
- Oracle Enterprise Manager For Peoplesoft — versions 13.4.1.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.apache.org/thread.html/r8c001b9a95c0bbec06f4457721edd94935a55932e64b82cc5… (mailing-list)
- lists.apache.org/thread.html/r2f209d271349bafd91537a558a279c08ebcff8fa3e547357d… (mailing-list)
- lists.apache.org/thread.html/r7641ee788e1eb1be4bb206a7d15f8a64ec6ef23e5ec6132d5… (mailing-list)
- lists.apache.org/thread.html/rd8e87c4d69df335d0ba7d815b63be8bd8a6352f429765c52e… (mailing-list)
- lists.apache.org/thread.html/r4285398e5585a0456d3d9db021a4fce6e6fcf3ec027dfa13a… (mailing-list)
- lists.apache.org/thread.html/r0df3d7a5acb98c57e64ab9266aa21eeee1d9b399addb96f9c… (mailing-list)
- lists.apache.org/thread.html/r7e739f2961753af95e2a3a637828fb88bfca68e5d6b0221d4… (mailing-list)
- lists.apache.org/thread.html/r9a79175c393d14d760a0ae3731b4a873230a16ef321aa9ca4… (mailing-list)
- lists.apache.org/thread.html/rbc45eb0f53fd6242af3e666c2189464f848a851d408289840… (mailing-list)
- lists.apache.org/thread.html/rec34b1cccf907898e7cb36051ffac3ccf1ea89d0b261a2a3b… (mailing-list)
Frequently asked questions
- What is CVE-2020-9488?
- CVE-2020-9488 is a low-severity vulnerability in Apache Log4j, classified under Improper Certificate Validation. CVSS score: 3.7/10. Published 2020-04-27.
- How severe is CVE-2020-9488?
- Low severity. CVSS v3 base score is 3.7 out of 10.
- Is CVE-2020-9488 known to be exploited?
- 24 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.