CVE-2011-1563 Memory corruption in n/a

Critical 10.0 Published Updated

Remote attackers can execute arbitrary code via stack-based buffer overflows in the RealFlex RealWin HMI application without authentication.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2011-1563?

CVE-2011-1563 is a critical memory corruption vulnerability in n/a, published on 5 Apr 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Multiple stack-based buffer overflows in the HMI application in DATAC RealFlex RealWin 2.1 (Build 6.1.10.10) and earlier allow remote attackers to execute arbitrary code via (1) a long username in an On_FC_CONNECT_FCS_LOGIN packet, and crafted (2) On_FC_CTAGLIST_FCS_CADDTAG, (3) On_FC_CTAGLIST_FCS_CDELTAG, (4) On_FC_CTAGLIST_FCS_ADDTAGMS, (5) On_FC_RFUSER_FCS_LOGIN, (6) unspecified "On_FC_BINFILE_FCS_*FILE", (7) On_FC_CGETTAG_FCS_GETTELEMETRY, (8) On_FC_CGETTAG_FCS_GETCHANNELTELEMETRY, (9) On_FC_CGETTAG_FCS_SETTELEMETRY, (10) On_FC_CGETTAG_FCS_SETCHANNELTELEMETRY, and (11) On_FC_SCRIPT_FCS_STARTPROG packets to port 910.

Weakness: CWE-119

Which versions are affected by CVE-2011-1563?

It affects 1 product.

Products include Realflex Realwin.

How do I fix CVE-2011-1563?

No fix has been published for CVE-2011-1563 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2011-1563 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-1563 exists.

Public exploit code: 2 Metasploit modules and 1 Exploit-DB entry.

Sources

Also known as GHSA-w8wq-c48h-9q7g.

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