Search for vulnerabilities
| Vulnerability ID | VCID-k7z7-aarf-aaag |
| Aliases |
CVE-2020-8843
|
| Summary | An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 6.7 |
| Risk | 3.4 |
| Affected and Fixed Packages | Package Details |
| CWE-20 | Improper Input Validation |
| Reference id | Reference type | URL |
|---|---|---|
| https://api.first.org/data/v1/epss?cve=CVE-2020-8843 | ||
| https://github.com/istio/istio/commits/master | ||
| https://istio.io/news/security/ | ||
| https://istio.io/news/security/istio-security-2020-002/ | ||
| cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* | https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* | |
| CVE-2020-8843 | https://nvd.nist.gov/vuln/detail/CVE-2020-8843 | |
| ISTIO-SECURITY-2020-002 | https://istio.io/latest/news/security/ISTIO-SECURITY-2020-002/ |
| Exploitability (E) | Access Vector (AV) | Access Complexity (AC) | Authentication (Au) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|
high functional unproven proof_of_concept not_defined |
local adjacent_network network |
high medium low |
multiple single none |
none partial complete |
none partial complete |
none partial complete |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.56976 |
| EPSS Score | 0.00193 |
| Published At | Dec. 17, 2024, midnight |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| There are no relevant records. | ||||