CVE-2018-16843: apple xcode Uncontrolled Resource Consumption
CVSS: 7.8v2.0HighModified
AliasesALPINE-CVE-2018-16843UBUNTU-CVE-2018-16843DEBIAN-CVE-2018-16843
Published 07-11-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-16843 is a high (CVSS 7.8) Uncontrolled Resource Consumption vulnerability in apple xcode. EPSS estimates a 47.98% chance of exploitation in the next 30 days, higher than 98.8% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v2.0 (NVD)EPSS score
47.98%
0%100%
High · +0.93 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 11 · Related 6Timeline
- 07-11-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive memory consumption. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.
CVSS metrics
8 scores · 5 sources · 3 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.3Preferred score · CVE.org (CNA)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LSources3 sources · 5.3–7.5
- NVDNIST5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
High 7.8Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
47.98%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
+0.93 pp
From 47.06% on 18-09-2026
18-09-202618-10-2026
EPSS score47.98%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- nginx< 1.14.1-1
- debian_linuxEOL9.0
[unknown]1 product
- nginx1.15.6 | 1.14.1
Alpine1 product
- nginx< 1.14.1-r0 | < 1.12.2-r2 | < 1.12.1-r4
Apple1 product
- xcode< 13.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10
F51 product
- nginx> 1.9.5, < 1.14.1 | > 1.15.0, < 1.15.6
Opensuse1 product
- leapEOL15.1
Ubuntu1 product
- nginx< 1.10.3-0ubuntu0.16.04.3 | < 1.14.0-0ubuntu1.2
8 vendors · 9 products
References
17 links
- mailman.nginx.org/pipermail/nginx-announce/2018/000220.htmlX Refsource MISCMailing ListVendor AdvisoryREPORT
- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16843X Refsource CONFIRMIssue TrackingThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory