Vulnerabilities (CVE)

Filtered by vendor Valvesoftware Subscribe
Total 29 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2023-38312 1 Valvesoftware 1 Counter-strike 2023-10-19 N/A 7.5 HIGH
A directory traversal vulnerability in Valve Counter-Strike 8684 allows a client (with remote control access to a game server) to read arbitrary files from the underlying server via the motdfile console variable.
CVE-2023-35855 1 Valvesoftware 1 Counter-strike 2023-06-30 N/A 9.8 CRITICAL
A buffer overflow in Counter-Strike through 8684 allows a game server to execute arbitrary code on a remote client's machine by modifying the lservercfgfile console variable.
CVE-2023-30382 1 Valvesoftware 1 Half-life 2023-05-31 N/A 7.3 HIGH
A buffer overflow in the component hl.exe of Valve Half-Life up to 5433873 allows attackers to execute arbitrary code and escalate privileges by supplying crafted parameters.
CVE-2020-6019 1 Valvesoftware 1 Game Networking Sockets 2022-11-03 5.0 MEDIUM 7.5 HIGH
Valve's Game Networking Sockets prior to version v1.2.0 improperly handles inlined statistics messages in function CConnectionTransportUDPBase::Received_Data(), leading to an exception thrown from libprotobuf and resulting in a crash.
CVE-2020-6016 1 Valvesoftware 1 Game Networking Sockets 2022-10-21 10.0 HIGH 9.8 CRITICAL
Valve's Game Networking Sockets prior to version v1.2.0 improperly handles unreliable segments with negative offsets in function SNP_ReceiveUnreliableSegment(), leading to a Heap-Based Buffer Underflow and a free() of memory not from the heap, resulting in a memory corruption and probably even a remote code execution.
CVE-2020-6018 1 Valvesoftware 1 Game Networking Sockets 2022-04-12 7.5 HIGH 9.8 CRITICAL
Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long encrypted messages in function AES_GCM_DecryptContext::Decrypt() when compiled using libsodium, leading to a Stack-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.
CVE-2020-6017 1 Valvesoftware 1 Game Networking Sockets 2022-04-12 7.5 HIGH 9.8 CRITICAL
Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.
CVE-2015-7985 1 Valvesoftware 1 Steam Client 2022-02-07 7.2 HIGH N/A
Valve Steam 2.10.91.91 uses weak permissions (Users: read and write) for the Install folder, which allows local users to gain privileges via a Trojan horse steam.exe file.
CVE-2015-4016 1 Valvesoftware 1 Steam Client 2022-02-07 5.0 MEDIUM N/A
The client detection protocol in Valve Steam allows remote attackers to cause a denial of service (process crash) via a crafted response to a broadcast packet.
CVE-2018-12270 1 Valvesoftware 1 Steam Client 2022-02-07 5.8 MEDIUM 5.4 MEDIUM
In Valve Steam 1528829181 BETA, it is possible to perform a homograph / homoglyph attack to create fake URLs in the client, which may trick users into visiting unintended web sites.
CVE-2020-9005 1 Valvesoftware 1 Dota 2 2022-02-07 6.8 MEDIUM 7.8 HIGH
meshsystem.dll in Valve Dota 2 through 2020-02-17 allows remote attackers to achieve code execution or denial of service by creating a gaming server with a crafted map, and inviting a victim to this server. A GetValue call is mishandled.
CVE-2021-30481 1 Valvesoftware 1 Steam Client 2022-02-07 6.0 MEDIUM 9.0 CRITICAL
Valve Steam through 2021-04-10, when a Source engine game is installed, allows remote authenticated users to execute arbitrary code because of a buffer overflow that occurs for a Steam invite after one click.
CVE-2020-15530 1 Valvesoftware 1 Steam Client 2021-07-21 7.2 HIGH 7.8 HIGH
An issue was discovered in Valve Steam Client 2.10.91.91. The installer allows local users to gain NT AUTHORITY\SYSTEM privileges because some parts of %PROGRAMFILES(X86)%\Steam and/or %COMMONPROGRAMFILES(X86)%\Steam have weak permissions during a critical time window. An attacker can make this time window arbitrarily long by using opportunistic locks.
CVE-2020-12242 1 Valvesoftware 1 Source 2021-07-21 7.2 HIGH 7.8 HIGH
Valve Source allows local users to gain privileges by writing to the /tmp/hl2_relaunch file, which is later executed in the context of a different user account.
CVE-2020-7951 1 Valvesoftware 1 Dota 2 2021-07-21 6.8 MEDIUM 7.8 HIGH
meshsystem.dll in Valve Dota 2 before 7.23e allows remote attackers to achieve code execution or denial of service by creating a gaming server and inviting a victim to this server, because a crafted map is affected by memory corruption.
CVE-2019-14743 2 Microsoft, Valvesoftware 2 Windows, Steam Client 2020-08-24 7.2 HIGH 6.6 MEDIUM
In Valve Steam Client for Windows through 2019-08-07, HKLM\SOFTWARE\Wow6432Node\Valve\Steam has explicit "Full control" for the Users group, which allows local users to gain NT AUTHORITY\SYSTEM access.
CVE-2019-15943 1 Valvesoftware 1 Counter-strike\ 2020-08-24 6.8 MEDIUM 8.8 HIGH
vphysics.dll in Counter-Strike: Global Offensive before 1.37.1.1 allows remote attackers to achieve code execution or denial of service by creating a gaming server and inviting a victim to this server, because a crafted map is mishandled during a memset call.
CVE-2019-15316 2 Microsoft, Valvesoftware 2 Windows, Steam Client 2020-08-24 6.9 MEDIUM 7.0 HIGH
Valve Steam Client for Windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to NT AUTHORITY\SYSTEM) via crafted use of CreateMountPoint.exe and SetOpLock.exe to leverage a TOCTOU race condition.
CVE-2019-15315 2 Microsoft, Valvesoftware 2 Windows, Steam Client 2020-08-24 7.2 HIGH 7.8 HIGH
Valve Steam Client for Windows through 2019-08-16 allows privilege escalation (to NT AUTHORITY\SYSTEM) because local users can replace the current versions of SteamService.exe and SteamService.dll with older versions that lack the CVE-2019-14743 patch.
CVE-2020-7952 1 Valvesoftware 1 Dota 2 2020-01-29 6.8 MEDIUM 7.8 HIGH
rendersystemdx9.dll in Valve Dota 2 before 7.23f allows remote attackers to achieve code execution or denial of service by creating a gaming server and inviting a victim to this server, because a crafted map is affected by memory corruption.