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Local buffer overflow in LanSpy 2.0.1.159 scan field
CVE-2018-25268 is a local buffer overflow vulnerability in LanSpy 2.0.1.159. The flaw is triggered by supplying oversized input to the application's scan field, resulting in an out-of-bounds write condition that allows overwriting of the instruction pointer. The provided technical detail indicates that an attacker can use a payload consisting of 688 bytes of padding followed by 4 bytes of attacker-controlled data to corrupt execution flow. Successful exploitation can crash the application and may potentially permit arbitrary code execution in the context of the affected process.
What it means and what to do now: patch path, interim mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
Successful exploitation allows a local attacker to corrupt process memory and overwrite the instruction pointer, causing application crash and denial of service. Because execution flow can be redirected with attacker-controlled data, the vulnerability may also enable arbitrary code execution with the privileges of the user running LanSpy, with corresponding confidentiality, integrity, and availability impact.
If you can’t patch tonight, do this now.
Restrict local access to systems running LanSpy 2.0.1.159 to trusted users only, since the attack vector is local. Prevent untrusted users from interacting with the application or supplying data to the scan field. Use host-based exploit mitigations such as DEP, ASLR, and endpoint protection where available, and monitor for abnormal crashes of LanSpy that could indicate exploitation attempts.
Patch, then assume compromise.
Upgrade from LanSpy 2.0.1.159 to a vendor-fixed version if one is available from LizardSystems. If no patched release is available, discontinue use of the vulnerable version in environments where untrusted users can interact with the application. Validate and constrain input length to the scan field in any maintained or wrapped deployment, and follow vendor guidance referenced in the associated advisories.
No public exploits tracked yet. Mallory keeps watching.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.