CVE-2018-15504

HIGH

Juniper Junos - Denial of Service via NULL Pointer Dereference in HTTP Time Header Handling

Title source: llm

Description

An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2. The server mishandles some HTTP request fields associated with time, which results in a NULL pointer dereference, as demonstrated by If-Modified-Since or If-Unmodified-Since with a month greater than 11.

References (5)

Core 5

Core References

Patch, Third Party Advisory

https://github.com/embedthis/appweb/commit/66067ae6d1fa08b37a270e7dc1821df52ed2daef

Exploit, Patch, Third Party Advisory

https://github.com/embedthis/appweb/issues/605

Exploit, Patch, Third Party Advisory

https://github.com/embedthis/goahead/issues/264

Third Party Advisory

https://supportportal.juniper.net/s/article/2019-07-Security-Bulletin-Junos-OS-J-Web-Denial-of-Service-due-to-multiple-vulnerabilities-in-Embedthis-Appweb-Server

Third Party Advisory

https://supportportal.juniper.net/s/article/2021-07-Security-Bulletin-Junos-OS-Multiple-J-Web-vulnerabilities-resolved

Scores

CVSS v3 7.5

EPSS 0.0098

EPSS Percentile 77.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-476

Status published

Products (5)

embedthis/appweb < 7.0.2

embedthis/goahead < 4.0.1

juniper/junos 12.1x46 (21 CPE variants)

juniper/junos 12.3x48 (17 CPE variants)

juniper/junos 15.1x49 (10 CPE variants)

Published Aug 18, 2018

Tracked Since Feb 18, 2026