overread

overread Simulates CVE-2023-4966 Citrix Bleed overread bug This is my final project for Harvard CS50 Cybersecurity 2023. It's about a bug. A small bug – with huge, ongoing consequences. In this presentation, I’ll be sharing the “bleeding insights” from one developer’s tiny mistake. A mistake that...

cve-images

cve-images — intentionally vulnerable lab images A collection of deliberately vulnerable Docker images for security study in an isolated lab. Started as nginx CVE reproductions and is growing into a broader set of vulnerable-by-design images e.g. DVWA. ⚠️ Safety These images are vulnerable on...

Citrix-Bleed-Buffer-Overread-Demo

Citrix-Bleed-Buffer-Overread-Demo This code functionally approximates the Citrix Bleed vulnerability CVE-2023-4699 of the improper handling of the return value of snprintf in C...

CVE-2024-5535

CVE-2024-5535 PoC - OpenSSL NPN Buffer Overread Note: We did not discover this, we only made a PoC for this based on the publication. https://nvd.nist.gov/vuln/detail/cve-2024-5535...

Security update for libtcnative-2-0

This update for libtcnative-2-0 fixes the following issues: CVE-2026-86243: buffer overread during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash bsc1282623. CVE-2026-86246: insecure ALLOWCLIENTRENEGOTIATION, NOEXTENDEDMASTERSECRET, IGNOREUNEXPECTEDEOF and ALLOWNODHEK...

SUSE-SU-2026:4546-1 Security update for libtcnative-1-0, tomcat, tomcat10

This update for libtcnative-1-0, tomcat, tomcat10 fixes the following issues: Security issues fixed: libtcnative-1-0: - CVE-2026-86243: buffer overread during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash bsc1282623. - CVE-2026-86246: insecure ALLOWCLIENTRENEGOTIATIO...

Security update for libtcnative-1-0, tomcat11

This update for libtcnative-1-0, tomcat11 fixes the following issues: Security issues fixed: libtcnative-1-0: CVE-2026-86243: buffer overread during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash bsc1282623. CVE-2026-86246: insecure ALLOWCLIENTRENEGOTIATION,...

Astra Linux – Vulnerability found in libsdl1.2, libsdl2, and sdl-image1.2

In SDL Simple DirectMediaLayer, versions from 1.2.15 up to 2.x, and then from 2.0.9 onwards, there is a heap-based buffer over-read issue in the BlitNtoN function within the video/SDLblitN.c file, when it is called from the SDLSoftBlit function in the video/SDLblit.c file...

Astra Linux – Vulnerability in Redis

Redis is an open-source, in-memory database that persists data on disk. When using the Redis Lua Debugger, users can send malformed requests, causing the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support 3.2 or...

Astra Linux – Vulnerability in glibc

The iconv feature in the GNU C Library also known as glibc or libc6, up to version 2.32, may have a buffer over-read issue when processing invalid multi-byte input sequences in the EUC-KR encoding...

Astra Linux – Vulnerability in bind9

In BIND 9.5.0 - 9.11.29, 9.12.0 - 9.16.13, and versions BIND 9.11.3-S1 - 9.11.29-S1 and 9.16.8-S1 - 9.16.13-S1 of the Supported Preview Edition, as well as release versions 9.17.0 - 9.17.1 of the BIND 9.17 development branch, BIND servers are vulnerable if they are running an affected version and...

Astra Linux – Vulnerability in Qemu

In QEMU 5.0.0, the file hw/usb/hcd-ohci.c contains a stack-based buffer over-read issue, caused by values obtained from the host controller driver...

Astra Linux – Vulnerability in gst-plugins-good1.0

GStreamer is a library for constructing graphs of media-handling components. A OOB-read vulnerability has been discovered in gstwavparsecuechunk within gstwavparse.c. The vulnerability occurs due to a discrepancy between the size of the data buffer and the size value provided to the function. Thi...

Astra Linux – Vulnerability in PHP 7.3, PHP 8.1

In PHP versions 8.1. before 8.1.31, and 8.2. before 8.2.26, as well as 8.3. before 8.3.14, a bug in the convert.quoted-printable-decode filter can cause certain data to be read as one byte too much. This can, under certain circumstances, lead to crashes or reveal content from other memory areas...

Astra Linux – Vulnerability in Squid

Squid is a caching proxy for the web that supports HTTP, HTTPS, FTP, and other protocols. Due to a Buffer Overread bug, Squid is vulnerable to a Denial of Service attack targeting the Squid HTTP message processing mechanism. This bug has been fixed in Squid version 6.5. Users are advised to...

Astra Linux – Vulnerability in binutils

A heap-based buffer overflow issue was discovered in the secmergehashlookup function in merge.c within the Binary File Descriptor BFD library also known as libbfd, as part of the GNU Binutils 2.31. This issue arises due to bfdaddmergesection improperly handling section merges when the size is not...

Astra Linux – Vulnerability in pillow

In Pillow before 8.1.0, PcxDecode has a buffer over-reading issue when decoding a crafted PCX file, because the user-supplied stride value is trusted for buffer calculations...

Astra Linux – Vulnerability in aspell

The libaspell.a module in GNU Aspell prior to version 0.60.8 has a stack-based buffer overflow issue in the common::unescape function within common/getdata.cpp, caused by an isolated \ character...

Astra Linux – Vulnerability in Qt4-X11

A issue was discovered in Qt between versions 5.12.9, 5.13.x, and 5.15.x up to 5.15.1. The readxbmbody function in gui/image/qxbmhandler.cpp has a buffer over-read issue...

Astra Linux – Vulnerability in gst-plugins-good1.0

GStreamer is a library for constructing graphs of media-handling components. A OOB-read vulnerability has been discovered in the parseds64 function within gstwavparse.c. The parseds64 function does not check that the buffer buf contains sufficient data before attempting to read from it, resulting...