cbcvebase.
CVE-2015-2993
published 2015-06-08

CVE-2015-2993: SysAid Help Desk before 15.2 does not properly restrict access to certain functionality, which allows remote attackers to (1) create administrator accounts via…

PriorityP271high7.5CVSS 2.0
AVNACLAuNCPIPAP
EXPLOIT
EPSS
55.36%
98.9th percentile
SysAid Help Desk before 15.2 does not properly restrict access to certain functionality, which allows remote attackers to (1) create administrator accounts via a crafted request to /createnewaccount or (2) write to arbitrary files via the fileName parameter to /userentry.

Affected

1 ranges
VendorProductVersion rangeFixed in
sysaidsysaid<= 15.1

Detection & IOCsextracted from sources · hover to see the quote

url/createnewaccount
url/userentry
otherfileName
  • Monitor for unauthenticated POST/GET requests to the /createnewaccount endpoint on SysAid Help Desk instances, which should not be publicly accessible and indicates an attempt to create a rogue administrator account.
  • Monitor for unauthenticated requests to /userentry containing a 'fileName' parameter, which may indicate an arbitrary file write attempt.
  • The exploit only works once per target; a single successful request to /createnewaccount from an unauthenticated source is sufficient to indicate full compromise. Alert on any unauthenticated access to this endpoint.
  • Exploitation has been confirmed on SysAid versions 14.4 on both Windows and Linux platforms; prioritize detection on these OS environments running SysAid prior to 15.2.
  • ·The admin account creation exploit is a one-shot attack per target instance; repeated attempts will fail, meaning a single anomalous unauthenticated request to /createnewaccount is the only detectable window.
  • ·Created administrator credentials must be verified manually after exploitation; automated confirmation of successful account creation is not built into the attack module.
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