Libevent
CVE-2016-10195
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
1DescriptionCVE.org
The name_parse function in evdns.c in libevent before 2.1.6-beta allows remote attackers to have unspecified impact via vectors involving the label_len variable, which triggers an out-of-bounds stack read.
AnalysisAI
The name_parse function in evdns.c in libevent before 2.1.6-beta allows remote attackers to have unspecified impact via vectors involving the label_len variable, which triggers an out-of-bounds stack. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. The name_parse function in evdns.c in libevent before 2.1.6-beta allows remote attackers to have unspecified impact via vectors involving the label_len variable, which triggers an out-of-bounds stack read. Affected products include: Libevent Project Libevent, Debian Debian Linux. Version information: before 2.1.6.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.
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Heap out-of-bounds write in libevent's bufferevent_sock.c allows any local peer connecting to an AF_UNIX evhttp listener
Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.
Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context
Memory exhaustion in libevent's WebSocket server (ws.c) allows unauthenticated remote clients to crash affected processe
Off-by-one stack buffer overflow in Libevent's evdns component (versions prior to 2.1.13-stable and 2.2.2-alpha) enables
Use-after-free memory corruption in libevent's evbuffer_add_buffer_reference (buffer.c) allows a caller that can drive a
Use-after-free in libevent's WebSocket session initialization (ws.c) before version 2.2.2-alpha allows a local low-privi
Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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