Erlang is a programming language and runtime system for building massively scalable soft real-time systems with requirements on high availability. OTP is a set of Erlang libraries, which consists of the Erlang runtime system, a number of ready-to-use components mainly written in Erlang. Packet size is not verified properly for SFTP packets. As a result when multiple SSH packets (conforming to max SSH packet size) are received by ssh, they might be combined into an SFTP packet which will exceed the max allowed packet size and potentially cause large amount of memory to be allocated. Note that situation described above can only happen for successfully authenticated users after completing the SSH handshake. This issue has been patched in OTP versions 27.2.4, 26.2.5.9, and 25.3.2.18. There are no known workarounds for this vulnerability.
CVSS Details
- CVSS 4.0 Base Score: 7 (HIGH)
- CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade erlang | Apr 21, 2025 | Feb 20, 2025 |
| Suse | — | Upgrade erlang-srcUpgrade erlangUpgrade erlang-wx-srcUpgrade erlang26-docUpgrade erlang-observer-srcUpgrade erlang26-epmdUpgrade erlang-debugger-srcUpgrade erlang-debuggerUpgrade erlang-wxUpgrade erlang26-reltoolUpgrade erlang26-diameter-srcUpgrade erlang26-jinterface-srcUpgrade erlang-reltool-srcUpgrade erlang26-dialyzerUpgrade erlang-reltoolUpgrade erlang-epmdUpgrade erlang26-jinterfaceUpgrade erlang26-observer-srcUpgrade erlang26-observerUpgrade erlang26-diameterUpgrade erlang26-debuggerUpgrade erlang-jinterface-srcUpgrade erlang26-debugger-srcUpgrade erlang26Upgrade erlang-diameterUpgrade erlang26-et-srcUpgrade erlang-dialyzer-srcUpgrade erlang-dialyzerUpgrade erlang-observerUpgrade erlang-etUpgrade erlang26-wx-srcUpgrade erlang26-wxUpgrade erlang-docUpgrade erlang-jinterfaceUpgrade erlang26-srcUpgrade erlang-et-srcUpgrade erlang-diameter-srcUpgrade erlang26-dialyzer-srcUpgrade erlang26-etUpgrade erlang26-reltool-src | Dec 5, 2025 | Mar 18, 2025 |
| Ubuntu | — | Upgrade erlangUpgrade erlang-ssh | Mar 4, 2025 | Feb 20, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Feb 20, 2025 |
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