Skip to content

[feat] add security warning for anchor element (rel attribute) #6289

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 3 commits into from
Oct 13, 2022
Merged

[feat] add security warning for anchor element (rel attribute) #6289

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
3f97f70
add security warning for anchor element (rel attribute)
jleveugle May 3, 2021
e5df2a6
manage more case for security warnings on anchor (aplocks, false posi…
jleveugle Jul 30, 2021
4cf48fa
remove noopener checks as noreferrer imples noopener
tanhauhau Oct 13, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
20 changes: 20 additions & 0 deletions src/compiler/compile/nodes/Element.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -394,6 +394,26 @@ export default class Element extends Node {
const href_attribute = attribute_map.get('href') || attribute_map.get('xlink:href');
const id_attribute = attribute_map.get('id');
const name_attribute = attribute_map.get('name');
const target_attribute = attribute_map.get('target');

if (target_attribute && target_attribute.get_static_value() === '_blank' && href_attribute) {
const href_static_value = href_attribute.get_static_value() ? href_attribute.get_static_value().toLowerCase() : null;

if (href_static_value === null || href_static_value.match(/^(https?:)?\/\//i)) {
const rel = attribute_map.get('rel');
const rel_values = rel ? rel.get_static_value().split(' ') : [];
const expected_values = ['noreferrer'];

expected_values.forEach(expected_value => {
if (!rel || rel && rel_values.indexOf(expected_value) < 0) {
component.warn(this, {
code: `security-anchor-rel-${expected_value}`,
message: `Security: Anchor with "target=_blank" should have rel attribute containing the value "${expected_value}"`
});
}
});
}
}

if (href_attribute) {
const href_value = href_attribute.get_static_value();
Expand Down
31 changes: 31 additions & 0 deletions test/validator/samples/security-anchor-rel-noreferrer/input.svelte
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,31 @@
<a href="https://svelte.dev" target="_blank">svelte website (invalid)</a>
<a href="https://svelte.dev" target="_blank" rel="">svelte website (invalid)</a>
<a href="https://svelte.dev" target="_blank" rel="noopener">svelte website (invalid)</a>
<a href={'https://svelte.dev'} target="_blank">svelte website (invalid)</a>
<a href={'https://svelte.dev'} target="_blank" rel="">svelte website (invalid)</a>
<a href={'https://svelte.dev'} target="_blank" rel="noopener">svelte website (invalid)</a>
<a href="//svelte.dev" target="_blank">svelte website (invalid)</a>
<a href="//svelte.dev" target="_blank" rel="">svelte website (invalid)</a>
<a href="//svelte.dev" target="_blank" rel="noopener">svelte website (invalid)</a>
<a href="http://svelte.dev" target="_blank">svelte website (invalid)</a>
<a href="http://svelte.dev" target="_blank" rel="">svelte website (invalid)</a>
<a href="http://svelte.dev" target="_blank" rel="noopener">svelte website (invalid)</a>
<a href="HTTP://svelte.dev" target="_blank">svelte website (invalid)</a>
<a href="HTTP://svelte.dev" target="_blank" rel="">svelte website (invalid)</a>
<a href="HTTP://svelte.dev" target="_blank" rel="noopener">svelte website (invalid)</a>
<a href={'HTTPS://svelte.dev'} target="_blank">svelte website (invalid)</a>
<a href={'HTTPS://svelte.dev'} target="_blank" rel="">svelte website (invalid)</a>
<a href={'HTTPS://svelte.dev'} target="_blank" rel="noopener">svelte website (invalid)</a>
<a href="same-host" target="_blank">Same host (valid)</a>
<a href="same-host" target="_blank" rel="">Same host (valid)</a>
<a href="same-host" target="_blank" rel="noopener">Same host (valid)</a>
<a href="http://svelte.dev" target="_blank" rel="noreferrer">svelte website (valid)</a>
<a href="http://svelte.dev" target="_blank" rel="noreferrer noopener">svelte website (valid)</a>
<a href="HTTP://svelte.dev" target="_blank" rel="noreferrer">svelte website (valid)</a>
<a href="HTTP://svelte.dev" target="_blank" rel="noreferrer noopener">svelte website (valid)</a>
<a href="https://svelte.dev" target="_blank" rel="noreferrer">svelte website (valid)</a>
<a href="https://svelte.dev" target="_blank" rel="noreferrer noopener">svelte website (valid)</a>
<a href="HTTPS://svelte.dev" target="_blank" rel="noreferrer">svelte website (valid)</a>
<a href="HTTPS://svelte.dev" target="_blank" rel="noreferrer noopener">svelte website (valid)</a>
<a href="//svelte.dev" target="_blank" rel="noreferrer">svelte website (valid)</a>
<a href="//svelte.dev" target="_blank" rel="noreferrer noopener">svelte website (valid)</a>
272 changes: 272 additions & 0 deletions test/validator/samples/security-anchor-rel-noreferrer/warnings.json
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,272 @@
[
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 73,
"column": 73,
"line": 1
},
"pos": 0,
"start": {
"character": 0,
"column": 0,
"line": 1
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 154,
"column": 80,
"line": 2
},
"pos": 74,
"start": {
"character": 74,
"column": 0,
"line": 2
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 243,
"column": 88,
"line": 3
},
"pos": 155,
"start": {
"character": 155,
"column": 0,
"line": 3
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 319,
"column": 75,
"line": 4
},
"pos": 244,
"start": {
"character": 244,
"column": 0,
"line": 4
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 402,
"column": 82,
"line": 5
},
"pos": 320,
"start": {
"character": 320,
"column": 0,
"line": 5
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 493,
"column": 90,
"line": 6
},
"pos": 403,
"start": {
"character": 403,
"column": 0,
"line": 6
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 561,
"column": 67,
"line": 7
},
"pos": 494,
"start": {
"character": 494,
"column": 0,
"line": 7
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 636,
"column": 74,
"line": 8
},
"pos": 562,
"start": {
"character": 562,
"column": 0,
"line": 8
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 719,
"column": 82,
"line": 9
},
"pos": 637,
"start": {
"character": 637,
"column": 0,
"line": 9
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 792,
"column": 72,
"line": 10
},
"pos": 720,
"start": {
"character": 720,
"column": 0,
"line": 10
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 872,
"column": 79,
"line": 11
},
"pos": 793,
"start": {
"character": 793,
"column": 0,
"line": 11
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 960,
"column": 87,
"line": 12
},
"pos": 873,
"start": {
"character": 873,
"column": 0,
"line": 12
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 1033,
"column": 72,
"line": 13
},
"pos": 961,
"start": {
"character": 961,
"column": 0,
"line": 13
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 1113,
"column": 79,
"line": 14
},
"pos": 1034,
"start": {
"character": 1034,
"column": 0,
"line": 14
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 1201,
"column": 87,
"line": 15
},
"pos": 1114,
"start": {
"character": 1114,
"column": 0,
"line": 15
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 1277,
"column": 75,
"line": 16
},
"pos": 1202,
"start": {
"character": 1202,
"column": 0,
"line": 16
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 1360,
"column": 82,
"line": 17
},
"pos": 1278,
"start": {
"character": 1278,
"column": 0,
"line": 17
}
},
{
"code": "security-anchor-rel-noreferrer",
"message": "Security: Anchor with \"target=_blank\" should have rel attribute containing the value \"noreferrer\"",
"end": {
"character": 1451,
"column": 90,
"line": 18
},
"pos": 1361,
"start": {
"character": 1361,
"column": 0,
"line": 18
}
}
]