High severity · published Jan 30, 2019
CVE-2019-0190
A bug exists in the way mod_ssl handled client renegotiations
7.5
CVSS
59.1%
EPSS
No
On KEV
Description
A bug exists in the way mod_ssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSSL version 1.1.1 or later, due to an interaction in changes to handling of renegotiation attempts.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)59.1% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HS
HTTP Server · Apache
Apache HTTP Server 2.4.37 · source: vendor, NVD
EM
Enterprise Manager Ops Center · Oracle
12.3.3 · source: NVD
HG
Hospitality Guest Access · Oracle
4.2.0; 4.2.1 · source: NVD
IE
Instantis Enterprisetrack · Oracle
17.1; 17.2; 17.3 · source: NVD
RX
Retail Xstore Point OF Service · Oracle
7.0; 7.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-0190
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-0190
Third Party Advisory
http://www.securityfocus.com/bid/106743
Vendor Advisory
https://httpd.apache.org/security/vulnerabilities_24.html
lists.apache.org
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r03ee478b3dda3e381fd6189366fa7af97c980d2f602846eef935277d%40%3Ccvs.httpd.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E
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