Remote heap overflow via wrapped V2GTP length check
Published Jul 10, 2024 · Updated Dec 16, 2024
Integer overflow in the EvseV2G module of EVerest Core allows remote attackers to crash the V2G server with a crafted V2GTP header. v2g_incoming_v2gtp adds the untrusted 32-bit payload length to the header size before validating it, so values near UINT32_MAX wrap and bypass the buffer-size check. The EvseV2G module must be running; an immediate process crash is demonstrated, while reliable code execution has not been established.
Summary
What happened
Integer overflow in the EvseV2G module of EVerest Core allows remote attackers to crash the V2G server with a crafted V2GTP header. v2g_incoming_v2gtp adds the untrusted 32-bit payload length to the header size before validating it, so values near UINT32_MAX wrap and bypass the buffer-size check. The EvseV2G module must be running; an immediate process crash is demonstrated, while reliable code execution has not been established.
The record
- CVE
- CVE-2024-37310
- Published
- Jul 10, 2024
- Updated
- Dec 16, 2024
- Vendor
- EVerest
- Product
- EVerest Core
- Classifications
- CWE-122, CWE-190, T1499.004, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 10, 2024CVE publishedPublication date reported by the CVE source.
- Dec 16, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <2024.6.0
- Affected versionversion=< 2024.3.1
- Affected versionversion=>= 2024.4.0, < 2024.6.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Upstream V2GTP heap-overflow crash PoCproof of concept · demonstrated
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Technologies
Your stack
See the directory against your own environment.
Your stack
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