Segmentation Violation when updating pescan (similar to issue #59)

[scadadefender]

Describe the bug
...with malice plugin update -all
[Updating Plugin] ===> pescan
latest: Pulling from malice/pescan
Digest: sha256:f99c8e823968e54c6470eaaff3bccdb1dcd9e520bcc034c693c742397c641b1d
Status: Image is up to date for malice/pescan:latest

...plugin update when running the scan
[Updating Plugin] ===> pescan
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1577f35]

goroutine 1 [running]:
github.com/maliceio/malice/malice/docker/client/image.Pull(0xc0003d8a50, 0xc0003b2aa0, 0xd, 0x17306c3, 0x6)
/Users/blacktop/go/src/github.com/maliceio/malice/malice/docker/client/image/image.go:40 +0x95
github.com/maliceio/malice/plugins.UpdateEnabledPlugins(0xc0003d8a50)
/Users/blacktop/go/src/github.com/maliceio/malice/plugins/plugins.go:257 +0x2b0
github.com/maliceio/malice/commands.cmdUpdatePlugin(0x0, 0x0, 0x1, 0x0, 0xc000086b40)
/Users/blacktop/go/src/github.com/maliceio/malice/commands/plugin.go:161 +0x20f
github.com/maliceio/malice/commands.glob..func8(0xc00034e840, 0x0, 0xc00034e840)
/Users/blacktop/go/src/github.com/maliceio/malice/commands/commands.go:138 +0xc1
github.com/maliceio/malice/vendor/github.com/urfave/cli.HandleAction(0x162b880, 0x1758ff8, 0xc00034e840, 0xc000086b00, 0x0)
/Users/blacktop/go/src/github.com/maliceio/malice/vendor/github.com/urfave/cli/app.go:490 +0xc8
github.com/maliceio/malice/vendor/github.com/urfave/cli.Command.Run(0x173087f, 0x6, 0x0, 0x0, 0x0, 0x0, 0x0, 0x173450f, 0xd, 0x0, ...)
/Users/blacktop/go/src/github.com/maliceio/malice/vendor/github.com/urfave/cli/command.go:210 +0x990
github.com/maliceio/malice/vendor/github.com/urfave/cli.(*App).RunAsSubcommand(0xc000020d00, 0xc00034e580, 0x0, 0x0)
/Users/blacktop/go/src/github.com/maliceio/malice/vendor/github.com/urfave/cli/app.go:379 +0x7ef
github.com/maliceio/malice/vendor/github.com/urfave/cli.Command.startApp(0x1730735, 0x6, 0x0, 0x0, 0x0, 0x0, 0x0, 0x17400fb, 0x1f, 0x0, ...)
/Users/blacktop/go/src/github.com/maliceio/malice/vendor/github.com/urfave/cli/command.go:298 +0x808
github.com/maliceio/malice/vendor/github.com/urfave/cli.Command.Run(0x1730735, 0x6, 0x0, 0x0, 0x0, 0x0, 0x0, 0x17400fb, 0x1f, 0x0, ...)
/Users/blacktop/go/src/github.com/maliceio/malice/vendor/github.com/urfave/cli/command.go:98 +0x1237
github.com/maliceio/malice/vendor/github.com/urfave/cli.(*App).Run(0xc000020b60, 0xc0000ac0c0, 0x4, 0x4, 0x0, 0x0)
/Users/blacktop/go/src/github.com/maliceio/malice/vendor/github.com/urfave/cli/app.go:255 +0x687
main.main()
/Users/blacktop/go/src/github.com/maliceio/malice/main.go:88 +0x4b2

To Reproduce

docker run --rm -v /var/run/docker.sock:/var/run/docker.sock
-v pwd:/malice/samples
--network="host"
-e MALICE_VT_API=$MALICE_VT_API
malice/engine scan malware.exe
or

malice scan malware.exe

Expected behavior

no segmentation violations

Environment (please complete the following information):

Output of docker version:

Client: Docker Engine - Community
Version: 19.03.12
API version: 1.40
Go version: go1.13.10
Git commit: 48a66213fe
Built: Mon Jun 22 15:41:33 2020
OS/Arch: darwin/amd64
Experimental: false

Server: Docker Engine - Community
Engine:
Version: 19.03.12
API version: 1.40 (minimum version 1.12)
Go version: go1.13.10
Git commit: 48a66213fe
Built: Mon Jun 22 15:49:27 2020
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: v1.2.13
GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc:
Version: 1.0.0-rc10
GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd
docker-init:
Version: 0.18.0
GitCommit: fec3683

Output of docker info:

Client:
Debug Mode: false

Server:
Containers: 28
Running: 11
Paused: 0
Stopped: 17
Images: 93
Server Version: 19.03.12
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc version: dc9208a3303feef5b3839f4323d9beb36df0a9dd
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 4.19.76-linuxkit
Operating System: Docker Desktop
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 3.848GiB
Name: docker-desktop
ID: 7LG6:7FY2:6EEC:M43Z:YNEI:6ANZ:3UHD:56JL:RJYT:NXTJ:FWAX:2Q75
Docker Root Dir: /var/lib/docker
Debug Mode: true
File Descriptors: 107
Goroutines: 111
System Time: 2020-08-27T02:28:05.0689518Z
EventsListeners: 3
HTTP Proxy: gateway.docker.internal:3128
HTTPS Proxy: gateway.docker.internal:3129
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine

Additional environment details (AWS, VirtualBox, physical, Docker For Mac, Docker Toolbox, docker-machine, etc.):
Docker For Mac

Additional context
config:
[[plugin]]
name = "pescan"
enabled = true
category = "test"
description = "This is a test plugin"
image = "blacktop/test"
repository = ""
build = false
apikey = ""
mime = "image/png"
cmd = ""
Installed = false

[scadadefender]

updated the config and enabled/disabled other plugins including javascript and archive. Received the same error at same address whenever it reaches the last plugin:

[Updating Plugin] ===> javascript
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1577f35]

[Updating Plugin] ===> archive
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1577f35]