infosec wiki
27 pages in this category
Linux
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the scrutiny gradient (2026-04-22 draft notes)
Apr 22, 2026 • updated
notes on the 2026-04-22 revision freeze of the mean-field survey of security commits, CVEs, and dossiers across 22 linux base-system repositories
Network Covert Channels
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coap protocol tunneling
Aug 12, 2025 • updated
iot covert channels using coap header field manipulation
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dns null record tunneling
Aug 12, 2025 • updated
high-performance dns covert channel using null records
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dhcp option field tunneling
Aug 12, 2025 • updated
covert channels using dhcp sname, file, and option fields
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dns over https tunneling
Aug 12, 2025 • updated
covert channels using dns-over-https on port 443
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dns timing channels
Aug 12, 2025 • updated
ultra-stealthy covert channels using dns query timing patterns
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dns txt record tunneling
Aug 12, 2025 • updated
dns covert channel using txt records for command and control
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http/https tunneling
Aug 12, 2025 • updated
tcp tunneling through http/https protocols for covert communication
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icmp tunneling
Aug 12, 2025 • updated
covert channels using icmp echo request/reply packets
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ipv6 extension header channels
Aug 12, 2025 • updated
covert channels using ipv6 extension headers and flow labels
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lorawan covert channels
Aug 12, 2025 • updated
iot covert channels using lorawan frame structure exploitation
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mqtt tunneling
Aug 12, 2025 • updated
iot protocol covert channels using mqtt publish-subscribe
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network covert channels index
Aug 12, 2025 • updated
comprehensive catalog of network tunneling and covert channel techniques
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ntp extension field tunneling
Aug 12, 2025 • updated
covert channels using ntp v4 extension fields for high-capacity data transfer
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ntp timing channels
Aug 12, 2025 • updated
covert channels using ntp inter-arrival times and stratum manipulation
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quic connection id tunneling
Aug 12, 2025 • updated
covert channels using quic protocol connection id manipulation
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webrtc data channels
Aug 12, 2025 • updated
peer-to-peer network tunneling using webrtc datachannel api
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websocket tunneling
Aug 12, 2025 • updated
high-performance covert channels using websocket protocol
Web Server Security
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ip access control vs x-forwarded-for: two java footguns
Jun 19, 2026 • updated
jetty's InetAccessHandler and undertow's ProxyPeerAddressHandler both let an ip allow-list be driven by the client-supplied X-Forwarded-For header in their documented reverse-proxy setups. the interactions are public and arguably intentional; the real defects are a false jetty javadoc guarantee and a misleading undertow method name, not new bypasses.
Windows Drivers
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KovaPlusFltr.sys: an unprivileged kernel stack overflow in the ROCCAT Kova[+] HID filter driver
Jun 26, 2026 • updated
glaurung surfaced an unbounded ioctl copy in a 2010 ROCCAT gaming-mouse filter driver: an attacker-controlled length copied into a fixed 3000-byte kernel stack buffer with no upper bound and no /GS cookie, overwriting the saved return address. unprivileged with a controlled kernel write, but reachable only when the Kova[+] mouse is present, which we reproduced in qemu by emulating the hardware the driver expects.
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live kernel-debugging windows drivers in qemu from linux (no windbg, no whpx, no exdi)
Jun 20, 2026 • updated
a working recipe for breakpointing windows kernel drivers running in a qemu/kvm guest, driven entirely from a linux host over the qemu gdbstub. it sidesteps the usual windbg-over-kdnet/exdi and whpx pain: gdb attaches to the gdbstub directly, base+rva is resolved without pdbs, and the single rule that fixes "symbols resolve but my breakpoint never hits" is hardware breakpoints only. ends with a real captured ring-0 saved-rip overwrite.
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glaurung windows driver findings
Jun 10, 2026 • updated
a running catalog of windows kernel-driver bugs found with glaurung, the binary-analysis toolkit — what each bug is, how the tool surfaced it, and an honest read on why microsoft did or did not act on it.
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ndfltr.sys: a 32-bit offset+length wrap into a kernel OOB read
Jun 10, 2026 • updated
glaurung found an integer-overflow-before-bounds-check in the windows NetworkDirect filter driver: a 32-bit (offset+length) validation that wraps while the use site applies the offset as a 64-bit addend, sending the source pointer ~4 GiB out of bounds. unprivileged on RDMA hosts, but a denial-of-service floor — and one of three candidate sites was a false positive we caught before disclosing.
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NDKPing.sys: a NULL SystemBuffer deref you can blue-screen on demand
Jun 10, 2026 • updated
glaurung flagged an ioctl dispatcher in the windows NDK diagnostic driver that loads Irp->AssociatedIrp.SystemBuffer and dereferences it without a null check. a METHOD_BUFFERED ioctl with zero-length input and output leaves SystemBuffer NULL, and every case body reads [NULL+0x28]. reproduced live as bugcheck 0x3B — but it is admin-only, which is exactly why microsoft will not fix it.
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ioctlance: windows driver vulnerability detection
Aug 17, 2025 • updated
symbolic execution and taint analysis for finding vulnerabilities in windows kernel drivers
Windows Vulnerability Research
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tcpip.sys Fse/port-tracker per-message length underflow (kernel OOB read, SEH-caught)
Jun 19, 2026 • updated
a confirmed integer underflow in the windows tcp/ip Fse/port-tracker (WSL2 mirrored-networking) transport hands a ~4GB declared length to the MIDL/NDR decoder over a <32-byte buffer. the kernel out-of-bounds read executes on a live kernel but is caught by an RPC structured-exception handler; the one possible escalation (an info-leak to the peer) is refuted by static analysis. real but benign, on an opt-in surface.
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june 2026 patch tuesday: a patch-diff campaign
Jun 10, 2026 • updated
reverse-engineering microsoft's record june 2026 patch tuesday: localizing the headline network and kernel cves, and two systemic observations (velocity-flag-gated fixes, and a reachability correction on the wormable tcp/ip rce)