CVE-2019-14993: istio Incorrect Regular Expression
CVSS: 7.5v3.0HighModified
AliasesCGA-9884-r32q-jmx8CGA-v7pw-327m-w9q6CGA-w6jq-2v9p-wxvgCGA-x2m8-prh7-66xgGHSA-qcvw-82hh-gq38CGA-352r-2j8q-5rx6CGA-384r-49f5-2pxmCGA-3pm3-h9jq-24w8CGA-5vc4-9pxv-6ww8CGA-66rj-v254-96m4CGA-7h2x-vww9-wr75CGA-fgpf-7wxc-8fgmCGA-fmwg-c3g9-454fCGA-gfh4-w87r-476cCGA-j4x3-639x-82g9CGA-phm3-rrwf-9prqCGA-qpvr-rg7j-wwc5CGA-rghq-4g4x-7gc4CGA-vx7r-wjwh-whvmCGA-ww3j-9543-6cmxCGA-wwmc-vrjg-h68w
Published 13-08-2019Last modified 05-08-2024
Vulnerability summary
CVE-2019-14993 is a high (CVSS 7.5) Incorrect Regular Expression vulnerability in istio. EPSS estimates a 2.29% chance of exploitation in the next 30 days, higher than 83% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
2.29%
0%100%
Low · +0.16 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github, reference
Advisory lineage
Upstream 0 · Downstream 1 · Related 15Timeline
- 13-08-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Istio before 1.1.13 and 1.2.x before 1.2.4 mishandles regular expressions for long URIs, leading to a denial of service during use of the JWT, VirtualService, HTTPAPISpecBinding, or QuotaSpecBinding API.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · GoEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.29%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
+0.16 pp
From 2.13% on 21-09-2026
21-09-202621-10-2026
EPSS score2.29%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundEnvoy
Maturity: poc
Exploit Reference (gcc.gnu.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Chainguard10 products
- cert-manager-istio-csrAll versions (No fix recorded)
- cert-manager-istio-csr-compatAll versions (No fix recorded)
- cert-manager-istio-csr-compat-fipsAll versions (No fix recorded)
- cert-manager-istio-csr-fipsAll versions (No fix recorded)
- istio-pilot-agent-1.22All versions (No fix recorded)
Wolfi2 products
- cert-manager-istio-csrAll versions (No fix recorded)
- cert-manager-istio-csr-compatAll versions (No fix recorded)
Istio1 product
- istio< 1.1.13 | ≥ 1.2.0, < 1.2.4
Istio.io1 product
- istio< 1.1.13 | ≥ 1.2.0, < 1.2.4
4 vendors · 14 products
References
6 links- discuss.istio.io/t/upcoming-security-updates-in-istio-1-2-4-and-1-1-13/3383X Refsource MISCVendor AdvisoryAdvisoryWEB
- github.com/envoyproxy/envoy/issues/7728X Refsource MISCExploitIssue TrackingThird Party AdvisoryREPORTWEB
- gcc.gnu.org/bugzilla/show_bug.cgi?id=86164X Refsource MISCExploitIssue TrackingThird Party AdvisoryREPORTWEB
