govuln
Desire to learn how to patch a vulnerability indirectly lifted into a Go Lang application in a manner which satsfies Twistlock scanning.
This is important where indirect libraries are not well maintained.
Approach
A simple example importing an old version of client-go to trigger x/crypto vulnerability. Upgrading client-go is not a solution since in the general case of an application to be fixed where there may be a cascade of api changes as a consequence.
The Challenge
Currently a twistlock scan will flag
+----------------+----------+------+---------------------+------------------------------------+---------------------------------------------+-----------+------------+----------------------------------------------------+
| CVE | SEVERITY | CVSS | PACKAGE | VERSION | STATUS | PUBLISHED | DISCOVERED | DESCRIPTION |
+----------------+----------+------+---------------------+------------------------------------+---------------------------------------------+-----------+------------+----------------------------------------------------+
| CVE-2020-29652 | high | 7.50 | golang.org/x/crypto | v0.0.0-20201002170205-7f63de1d35b0 | fixed in v0.0.0-20201216223049-8b5274cf687f | > 1 years | < 1 hour | DOCUMENTATION: A null pointer dereference |
| | | | | | > 1 years ago | | | vulnerability was found in golang. When using the |
| | | | | | | | | library\'s ssh server without specifying an option |
| | | | | | | | | for GSS... |
+----------------+----------+------+---------------------+------------------------------------+---------------------------------------------+-----------+------------+----------------------------------------------------+
Explanation of import:
go mod why -m golang.org/x/crypto
# golang.org/x/crypto
github.com/EFX-PXT1/govuln
k8s.io/client-go/tools/clientcmd
golang.org/x/crypto/ssh/terminal
Failed Attempts
replace
Adding a replace DOES NOT satisfy Twistlock
replace golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0 => golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838
The hypothesis being that Twistlock does not honour the replace
$ go version -m govuln
govuln: go1.17.6
path github.com/EFX-PXT1/govuln
mod github.com/EFX-PXT1/govuln (devel)
dep github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
dep github.com/go-logr/logr v0.4.0 h1:K7/B1jt6fIBQVd4Owv2MqGQClcgf0R266+7C/QjRcLc=
dep github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
dep github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
dep github.com/google/gofuzz v1.1.0 h1:Hsa8mG0dQ46ij8Sl2AYJDUv1oA9/d6Vk+3LG99Oe02g=
dep github.com/imdario/mergo v0.3.5 h1:JboBksRwiiAJWvIYJVo46AfV+IAIKZpfrSzVKj42R4Q=
dep github.com/json-iterator/go v1.1.10 h1:Kz6Cvnvv2wGdaG/V8yMvfkmNiXq9Ya2KUv4rouJJr68=
dep github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
dep github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
dep github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
dep golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0
=> golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838 h1:71vQrMauZZhcTVK6KdYM+rklehEEwb3E+ZhaE5jrPrE=
dep golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 h1:CIJ76btIcR3eFI5EgSo6k1qKw9KJexJuRLI9G7Hp5wE=
dep golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d h1:TzXSXBo42m9gQenoE3b9BGiEpg5IG2JkU5FkPIawgtw=
dep golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 h1:SrN+KX8Art/Sf4HNj6Zcz06G7VEz+7w9tdXTPOZ7+l4=
dep golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1 h1:v+OssWQX+hTHEmOBgwxdZxK4zHq3yOs8F9J7mk0PY8E=
dep golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
dep golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba h1:O8mE0/t419eoIwhTFpKVkHiTs/Igowgfkj25AcZrtiE=
dep gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
dep gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
dep k8s.io/apimachinery v0.21.1 h1:Q6XuHGlj2xc+hlMCvqyYfbv3H7SRGn2c8NycxJquDVs=
dep k8s.io/client-go v0.20.15 h1:B6Wvl5yFiHkDZaZ0i5Vju6mGHw4Zo2DzDE8XF378Asc=
dep k8s.io/klog/v2 v2.8.0 h1:Q3gmuM9hKEjefWFFYF0Mat+YyFJvsUyYuwyNNJ5C9Ts=
dep k8s.io/utils v0.0.0-20201110183641-67b214c5f920 h1:CbnUZsM497iRC5QMVkHwyl8s2tB3g7yaSHkYPkpgelw=
dep sigs.k8s.io/structured-merge-diff/v4 v4.1.2 h1:Hr/htKFmJEbtMgS/UD0N+gtgctAqz81t3nu+sPzynno=
dep sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=
