PT-2019-19826 · Shanda · Shanda Maplestory Online

Doublelabyrinth · Published 2019-03-12 · Updated 2020-08-24 · CVE-2019-9729

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Shanda MapleStory Online version V160

Description The issue arises from the SdoKeyCrypt.sys driver, which fails to validate the IOCtl 0x8000c01c input value. This oversight leads to an integer signedness error and a heap-based buffer underflow, ultimately allowing privilege escalation to NT AUTHORITYSYSTEM.

Recommendations For Shanda MapleStory Online version V160, consider disabling the SdoKeyCrypt.sys driver as a temporary workaround until a patch is available. Restrict access to the IOCtl 0x8000c01c to minimize the risk of exploitation.

Exploit

Fix

Improper Validation of Array Index

Memory Corruption

Weakness Enumeration

CWE-129

CWE-787

Related Identifiers

CVE-2019-9729

Affected Products

Shanda Maplestory Online

References · 4

• 🔥 https://github.com/HyperSine/SdoKeyCrypt-sys-local-privilege-elevation · Exploit
• 🔥 https://github.com/DoubleLabyrinth/SdoKeyCrypt-sys-local-privilege-elevation · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-9729 · Security Note
• https://osv.dev/vulnerability/CVE-2019-9729 · Vendor Advisory