CVE-2024-279197.5HighCWE-390

CVE-2024-27919: HTTP/2: memory exhaustion due to CONTINUATION frame flood

envoyproxy · envoy

Affected: envoyproxy · Exploitation: likely to be exploited (10% or more)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

83.9%probability of exploitation in the next 30 days

99th percentile

050100

Higher than 99% of scored CVEs

7.5HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

Envoy is a cloud-native, open-source edge and service proxy. In versions 1.29.0 and 1.29.1, theEnvoy HTTP/2 protocol stack is vulnerable to the flood of CONTINUATION frames. Envoy's HTTP/2 codec does not reset a request when header map limits have been exceeded. This allows an attacker to send an sequence of CONTINUATION frames without the END_HEADERS bit set causing unlimited memory consumption. This can lead to denial of service through memory exhaustion. Users should upgrade to versions 1.29.2 to mitigate the effects of the CONTINUATION flood. Note that this vulnerability is a regression in Envoy version 1.29.0 and 1.29.1 only. As a workaround, downgrade to version 1.28.1 or earlier or disable HTTP/2 protocol for downstream connections.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

envoyproxy · envoy>= 1.29.0, < 1.29.2

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Likely to be exploited (10% or more). EPSS gives it a 10% or higher chance of exploitation in the next 30 days.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Detection of Error Condition Without Action · Input Validation and Logic
Vendor: envoyproxy
Published: April 2024
Band: Likely to be exploited (10% or more), April 2024

CoverageNo articles yet

No CyberSIXT article names CVE-2024-27919 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.