NULL pointer dereference in Embedthis Appweb
CVE-2018-15504
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.028 (86.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/embedthis/appweb/commit/66067ae6d1fa08b37a270e7dc1821df52ed2daef (Patch, Third Party Advisory)
- github.com/embedthis/appweb/issues/605 (Exploit, Patch, Third Party Advisory)
- github.com/embedthis/goahead/issues/264 (Exploit, Patch, Third Party Advisory)
- supportportal.juniper.net/s/article/2021-07-Security-Bulletin-Junos-OS-Multiple… (Third Party Advisory)
- supportportal.juniper.net/s/article/2019-07-Security-Bulletin-Junos-OS-J-Web-De… (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-15504?
- CVE-2018-15504 is a high-severity vulnerability in Embedthis Appweb, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2018-08-18.
- How severe is CVE-2018-15504?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-15504 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.