CVE-2024-30255
Scores
EPSS
Percentile: 88.8%
CVSS
CVSS Score: 5.3/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Low (L)
Measures the impact to the availability of the impacted component
Description
Envoy is a cloud-native, open source edge and service proxy. The HTTP/2 protocol stack in Envoy versions prior to 1.29.3, 1.28.2, 1.27.4, and 1.26.8 are vulnerable to CPU exhaustion due to flood of CONTINUATION frames. Envoy’s HTTP/2 codec allows the client to send an unlimited number of CONTINUATION frames even after exceeding Envoy’s header map limits. This allows an attacker to send a sequence of CONTINUATION frames without the END_HEADERS bit set causing CPU utilization, consuming approximately 1 core per 300Mbit/s of traffic and culminating in denial of service through CPU exhaustion. Users should upgrade to version 1.29.3, 1.28.2, 1.27.4, or 1.26.8 to mitigate the effects of the CONTINUATION flood. As a workaround, disable HTTP/2 protocol for downstream connections.
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Sources
CWEs
Related Vulnerabilities
Vulnerable Software (3)
Type: Configuration
Operating System:
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.29.3", "versionStartIncluding":...
{ "children": [ { "cpe_match": [ { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.29.3", "versionStartIncluding": "1.29.0" }, { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.28.2", "versionStartIncluding": "1.28.0" }, { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.27.4", "versionStartIncluding": "1.27.0" }, { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.26.8" } ], "negate": false, "operator": "OR" } ], "operator": "OR"}
Source: anchore_overrides
Type: Configuration
Product: envoyproxy
Operating System: debian
{ "unfixed": true}
Source: debian
Type: Configuration
Vendor: *
Product: envoy
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.26.8", "vulnerable": true }, { "cpe23uri": "cpe:2.3:a:envoy...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.26.8", "vulnerable": true }, { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.27.4", "versionStartIncluding": "1.27.0", "vulnerable": true }, { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.28.2", "versionStartIncluding": "1.28.0", "vulnerable": true }, { "cpe23uri": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.29.3", "versionStartIncluding": "1.29.0", "vulnerable": true } ], "operator": "OR"}
Source: nvd