CVE-2019-3858
An out of bounds read flaw was discovered in libssh2 before 1.8.1 when a specially crafted SFTP packet is received from the server. A remote
CVSS
5.0
Média
EPSS
6.4%
p94
KEV
—
Exploit Today
28
0-100
Publicado: 21 de mar. de 2019 · Última mod.: 14 de out. de 2026 · CWE-125
6.4%EPSS · 30 dias6.4%
2026-10-172026-11-13
An out of bounds read flaw was discovered in libssh2 before 1.8.1 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
- lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
- lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
- packetstormsecurity.comhttp://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2019/03/18/3
- www.securityfocus.comhttp://www.securityfocus.com/bid/107485
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2019:2136
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3858
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
- seclists.orghttps://seclists.org/bugtraq/2019/Apr/25
- seclists.orghttps://seclists.org/bugtraq/2019/Mar/25
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20190327-0005/
- www.broadcom.comhttps://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767
- www.debian.orghttps://www.debian.org/security/2019/dsa-4431
- www.libssh2.orghttps://www.libssh2.org/CVE-2019-3858.html
- www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
- lists.opensuse.orghttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
- packetstormsecurity.comhttp://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html
CVECVSSEPSSKEVRExploitTítuloMod.
CVE-2026-1294326.5 MÉD—
———Ettercap through 0.8.5.1 contains a heap out-of-bounds read vulnerability in dissector_mountd() in src/dissectors/ec_mountd.c that validates RPC credential and directory lengths independently rather than against the packet end. Network-adjacent attackers can send a crafted MOUNT MNT call to read up to 100 bytes past the heap buffer, leaking memory to the console and logs.22hCVE-2026-1294316.5 MÉD—
———Ettercap through 0.8.5.1 contains a heap out-of-bounds read vulnerability in dissector_socks() in src/dissectors/ec_socks.c that allows network-adjacent attackers to read heap memory via unchecked SOCKS5 username/password lengths. Attackers can send a crafted SOCKS5 authentication packet observed by Ettercap to read up to 255 bytes past the heap buffer, disclosing memory printed and logged as captured credentials.22hCVE-2026-646755.3 MÉD—
——0BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.5 and 1.5.1, a single unauthenticated BACnet/IP UDP datagram (port 47808) triggers an out-of-bounds read in xy_color_decode() (src/bacnet/lighting.c), reachable pre-authentication through two default-registered service handlers: the UnconfirmedRequest WriteGroup service (0x0A) and Confirmed WriteProperty on a BACnetXYColor-typed property. This issue has been patched in versions 1.4.5, 1.5.1, and 1.6.0.2dCVE-2026-62976——
——0BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to version 1.5.1, the RAMFS-backed FILE object implementation stores appended records as NUL-terminated strings, but its record-counting logic later walks the buffer as if an additional terminating empty record were present. As a result, two consecutive AtomicWriteFile(record-access) append requests can cause record_count() to call bacnet_strnlen() on a pointer that is already one byte past the end of the heap allocation. This issue has been patched in versions 1.5.1 and 1.6.0.2dCVE-2026-62975——
——0BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to version 1.5.1, the RAMFS-backed FILE implementation accepts AtomicWriteFile(record-access) requests that replace existing records with caller-controlled content. If a client replaces a record with shorter data, the backend can shrink the heap allocation and then continue processing with a trailing-copy length derived from the old layout. During that replace path, the RAMFS backend computes the trailing-copy length from the old file layout, then shrinks the heap allocation, and finally uses the stale length in memmove(). As a result, the source range of that memmove() can extend beyond the end of the reallocated heap buffer, producing a heap out-of-bounds read. This issue has been patched in versions 1.5.1 and 1.6.0.2dCVE-2026-129217——
——0In FRRouting (FRR) 8.3 through 10.5.1, bgp_notify_decapsulate_hard_reset() in bgpd/bgp_packet.c does not validate the length of the data field of a received BGP NOTIFICATION Cease/Hard Reset message (RFC 8538). When the data field is exactly one byte long, the function reads one byte past the end of a heap buffer and the 16-bit length of the encapsulated data underflows to 65535, causing a 65535-byte out-of-bounds heap read followed by an assertion failure. A remote BGP peer that has established a session and negotiated the Graceful Restart capability with the Notification (N) bit can send such a message to crash the bgpd daemon, terminating all BGP sessions (denial of service). This is fixed in 10.0.5, 10.1.5, 10.2.6, 10.3.4, 10.4.3, 10.5.2 and 10.6.0.2d