Security fixes

Co-Authored-By: dakkar <dakkar@thenautilus.net>

10 files changed, 24 insertions, 17 deletions

diff --git a/packages/frontend/src/components/MkLink.vue b/packages/frontend/src/components/MkLink.vue
index 263cd95eb1..ad54e1b00e 100644
--- a/packages/frontend/src/components/MkLink.vue
+++ b/packages/frontend/src/components/MkLink.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <component
-	:is="self ? 'MkA' : 'a'" ref="el" style="word-break: break-all;" class="_link" :[attr]="self ? url.substring(local.length) : url" :rel="rel ?? 'nofollow noopener'" :target="target"
+	:is="self ? 'MkA' : 'a'" ref="el" style="word-break: break-all;" class="_link" :[attr]="maybeRelativeUrl" :rel="rel ?? 'nofollow noopener'" :target="target"
 	:behavior="props.navigationBehavior"
 	:title="url"
 	@click.prevent="self ? true : warningExternalWebsite(url)"
@@ -24,6 +24,7 @@ import * as os from '@/os.js';
 import { isEnabledUrlPreview } from '@/instance.js';
 import { MkABehavior } from '@/components/global/MkA.vue';
 import { warningExternalWebsite } from '@/scripts/warning-external-website.js';
+import { maybeMakeRelative } from '@@/js/url.js';
 
 const props = withDefaults(defineProps<{
 	url: string;
@@ -32,7 +33,8 @@ const props = withDefaults(defineProps<{
 }>(), {
 });
 
-const self = props.url.startsWith(local);
+const maybeRelativeUrl = maybeMakeRelative(props.url, local);
+const self = maybeRelativeUrl !== props.url;
 const attr = self ? 'to' : 'href';
 const target = self ? null : '_blank';
 
diff --git a/packages/frontend/src/components/MkUrlPreview.vue b/packages/frontend/src/components/MkUrlPreview.vue
index 3063c77c0e..e921836218 100644
--- a/packages/frontend/src/components/MkUrlPreview.vue
+++ b/packages/frontend/src/components/MkUrlPreview.vue
@@ -45,8 +45,8 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 <div v-else-if="theNote" :class="[$style.link, { [$style.compact]: compact }]"><XNoteSimple :note="theNote" :class="$style.body"/></div>
 <div v-else-if="!hidePreview">
-	<component :is="self ? 'MkA' : 'a'" :class="[$style.link, { [$style.compact]: compact }]" :[attr]="self ? url.substring(local.length) : url" rel="nofollow noopener" :target="target" :title="url">
-		<div v-if="thumbnail && !sensitive" :class="$style.thumbnail" :style="defaultStore.state.dataSaver.urlPreview ? '' : `background-image: url('${thumbnail}')`">
+	<component :is="self ? 'MkA' : 'a'" :class="[$style.link, { [$style.compact]: compact }]" :[attr]="maybeRelativeUrl" rel="nofollow noopener" :target="target" :title="url">
+		<div v-if="thumbnail && !sensitive" :class="$style.thumbnail" :style="defaultStore.state.dataSaver.urlPreview ? '' : { backgroundImage: `url('${thumbnail}')` }">
 		</div>
 		<article :class="$style.body">
 			<header :class="$style.header">
@@ -98,6 +98,7 @@ import MkButton from '@/components/MkButton.vue';
 import { transformPlayerUrl } from '@/scripts/player-url-transform.js';
 import { defaultStore } from '@/store.js';
 import { misskeyApi } from '@/scripts/misskey-api.js';
+import { maybeMakeRelative } from '@@/js/url.js';
 
 const XNoteSimple = defineAsyncComponent<typeof MkNoteSimple | typeof SkNoteSimple>(() =>
 	defaultStore.state.noteDesign === 'misskey'
@@ -126,7 +127,8 @@ const MOBILE_THRESHOLD = 500;
 const isMobile = ref(deviceKind === 'smartphone' || window.innerWidth <= MOBILE_THRESHOLD);
 
 const hidePreview = ref<boolean>(false);
-const self = props.url.startsWith(local);
+const maybeRelativeUrl = maybeMakeRelative(props.url, local);
+const self = maybeRelativeUrl !== props.url;
 const attr = self ? 'to' : 'href';
 const target = self ? null : '_blank';
 const fetching = ref(true);
diff --git a/packages/frontend/src/components/MkUserInfo.vue b/packages/frontend/src/components/MkUserInfo.vue
index a6bbacacee..7e805dc904 100644
--- a/packages/frontend/src/components/MkUserInfo.vue
+++ b/packages/frontend/src/components/MkUserInfo.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div class="_panel" :class="$style.root">
-	<div :class="$style.banner" :style="user.bannerUrl ? `background-image: url(${defaultStore.state.disableShowingAnimatedImages ? getStaticImageUrl(user.bannerUrl) : user.bannerUrl})` : ''"></div>
+	<div :class="$style.banner" :style="user.bannerUrl ? { backgroundImage: `url(${defaultStore.state.disableShowingAnimatedImages ? getStaticImageUrl(user.bannerUrl) : user.bannerUrl})` } : ''"></div>
 	<MkAvatar :class="$style.avatar" :user="user" indicator/>
 	<div :class="$style.title">
 		<MkA :class="$style.name" :to="userPage(user)"><MkUserName :user="user" :nowrap="false"/></MkA>
diff --git a/packages/frontend/src/components/MkUserPopup.vue b/packages/frontend/src/components/MkUserPopup.vue
index 73e38bef09..f54b559fcf 100644
--- a/packages/frontend/src/components/MkUserPopup.vue
+++ b/packages/frontend/src/components/MkUserPopup.vue
@@ -13,7 +13,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 >
 	<div v-if="showing" :class="$style.root" class="_popup _shadow" :style="{ zIndex, top: top + 'px', left: left + 'px' }" @mouseover="() => { emit('mouseover'); }" @mouseleave="() => { emit('mouseleave'); }">
 		<div v-if="user != null">
-			<div :class="$style.banner" :style="user.bannerUrl ? `background-image: url(${defaultStore.state.disableShowingAnimatedImages ? getStaticImageUrl(user.bannerUrl) : user.bannerUrl})` : ''">
+			<div :class="$style.banner" :style="user.bannerUrl ? { backgroundImage: `url(${defaultStore.state.disableShowingAnimatedImages ? getStaticImageUrl(user.bannerUrl) : user.bannerUrl})` } : ''">
 				<span v-if="$i && $i.id != user.id && user.isFollowed && user.isFollowing" :class="$style.followed">{{ i18n.ts.mutuals }}</span>
 				<span v-else-if="$i && $i.id != user.id && user.isFollowed" :class="$style.followed">{{ i18n.ts.followsYou }}</span>
 				<span v-else-if="$i && $i.id != user.id && user.isFollowing" :class="$style.followed">{{ i18n.ts.following }}</span>
diff --git a/packages/frontend/src/components/MkUserSetupDialog.User.vue b/packages/frontend/src/components/MkUserSetupDialog.User.vue
index 4c4f4989c5..421fdcc9e3 100644
--- a/packages/frontend/src/components/MkUserSetupDialog.User.vue
+++ b/packages/frontend/src/components/MkUserSetupDialog.User.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <div v-adaptive-bg class="_panel" style="position: relative;">
-	<div :class="$style.banner" :style="user.bannerUrl ? `background-image: url(${user.bannerUrl})` : ''"></div>
+	<div :class="$style.banner" :style="user.bannerUrl ? { backgroundImage: `url(${user.bannerUrl})` } : ''"></div>
 	<MkAvatar :class="$style.avatar" :user="user" indicator/>
 	<div :class="$style.title">
 		<div :class="$style.name"><MkUserName :user="user" :nowrap="false"/></div>
diff --git a/packages/frontend/src/components/global/MkMfm.ts b/packages/frontend/src/components/global/MkMfm.ts
index 9785bc0f07..b292f86445 100644
--- a/packages/frontend/src/components/global/MkMfm.ts
+++ b/packages/frontend/src/components/global/MkMfm.ts
@@ -20,6 +20,7 @@ import MkGoogle from '@/components/MkGoogle.vue';
 import MkSparkle from '@/components/MkSparkle.vue';
 import MkA, { MkABehavior } from '@/components/global/MkA.vue';
 import { defaultStore } from '@/store.js';
+import { clamp } from '@@/js/math.js';
 
 function safeParseFloat(str: unknown): number | null {
 	if (typeof str !== 'string' || str === '') return null;
@@ -309,10 +310,10 @@ export default function (props: MfmProps, { emit }: { emit: SetupContext<MfmEven
 							style = '';
 							break;
 						}
-						const x = Math.min(safeParseFloat(token.props.args.x) ?? 1, 5);
-						const y = Math.min(safeParseFloat(token.props.args.y) ?? 1, 5);
+						const x = clamp(safeParseFloat(token.props.args.x) ?? 1, -5, 5);
+						const y = clamp(safeParseFloat(token.props.args.y) ?? 1, -5, 5);
 						style = `transform: scale(${x}, ${y});`;
-						scale = scale * Math.max(x, y);
+						scale = scale * Math.max(Math.abs(x), Math.abs(y));
 						break;
 					}
 					case 'fg': {
diff --git a/packages/frontend/src/components/global/MkUrl.vue b/packages/frontend/src/components/global/MkUrl.vue
index 5196a63635..f4ed7ae427 100644
--- a/packages/frontend/src/components/global/MkUrl.vue
+++ b/packages/frontend/src/components/global/MkUrl.vue
@@ -5,7 +5,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <component
-	:is="self ? 'MkA' : 'a'" ref="el" :class="$style.root" class="_link" :[attr]="self ? props.url.substring(local.length) : props.url" :rel="rel ?? 'nofollow noopener'" :target="target"
+	:is="self ? 'MkA' : 'a'" ref="el" :class="$style.root" class="_link" :[attr]="maybeRelativeUrl" :rel="rel ?? 'nofollow noopener'" :target="target"
 	:behavior="props.navigationBehavior"
 	@contextmenu.stop="() => {}"
 	@click.prevent="self ? true : warningExternalWebsite(props.url)"
@@ -35,6 +35,7 @@ import { useTooltip } from '@/scripts/use-tooltip.js';
 import { isEnabledUrlPreview } from '@/instance.js';
 import { MkABehavior } from '@/components/global/MkA.vue';
 import { warningExternalWebsite } from '@/scripts/warning-external-website.js';
+import { maybeMakeRelative } from '@@/js/url.js';
 
 function safeURIDecode(str: string): string {
 	try {
@@ -53,7 +54,8 @@ const props = withDefaults(defineProps<{
 	showUrlPreview: true,
 });
 
-const self = props.url.startsWith(local);
+const maybeRelativeUrl = maybeMakeRelative(props.url, local);
+const self = maybeRelativeUrl !== props.url;
 const url = new URL(props.url);
 if (!['http:', 'https:'].includes(url.protocol)) throw new Error('invalid url');
 const el = ref();
diff --git a/packages/frontend/src/scripts/aiscript/api.ts b/packages/frontend/src/scripts/aiscript/api.ts
index e203c51bba..f77cc9c546 100644
--- a/packages/frontend/src/scripts/aiscript/api.ts
+++ b/packages/frontend/src/scripts/aiscript/api.ts
@@ -68,7 +68,7 @@ export function createAiScriptEnv(opts: { storageKey: string, token?: string })
 		}),
 		'Mk:api': values.FN_NATIVE(async ([ep, param, token]) => {
 			utils.assertString(ep);
-			if (ep.value.includes('://')) {
+			if (ep.value.includes('://') || ep.value.includes('..')) {
 				throw new errors.AiScriptRuntimeError('invalid endpoint');
 			}
 			if (token) {
diff --git a/packages/frontend/src/widgets/WidgetPhotos.vue b/packages/frontend/src/widgets/WidgetPhotos.vue
index 60a4770e40..836cda14e5 100644
--- a/packages/frontend/src/widgets/WidgetPhotos.vue
+++ b/packages/frontend/src/widgets/WidgetPhotos.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			<div
 				v-for="(image, i) in images" :key="i"
 				:class="$style.img"
-				:style="`background-image: url(${thumbnail(image)})`"
+				:style="{ backgroundImage: `url(${thumbnail(image)})` }"
 			></div>
 		</div>
 	</div>
diff --git a/packages/frontend/src/widgets/server-metric/cpu-mem.vue b/packages/frontend/src/widgets/server-metric/cpu-mem.vue
index 469075e2c4..614ffe59e3 100644
--- a/packages/frontend/src/widgets/server-metric/cpu-mem.vue
+++ b/packages/frontend/src/widgets/server-metric/cpu-mem.vue
@@ -34,7 +34,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<rect
 			x="-2" y="-2"
 			:width="viewBoxX + 4" :height="viewBoxY + 4"
-			:style="`stroke: none; fill: url(#${ cpuGradientId }); mask: url(#${ cpuMaskId })`"
+			:style="{ stroke: 'none', fill: `url(#${ cpuGradientId })`, mask: `url(#${ cpuMaskId })` }"
 		/>
 		<text x="1" y="5">CPU <tspan>{{ cpuP }}%</tspan></text>
 	</svg>
@@ -67,7 +67,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<rect
 			x="-2" y="-2"
 			:width="viewBoxX + 4" :height="viewBoxY + 4"
-			:style="`stroke: none; fill: url(#${ memGradientId }); mask: url(#${ memMaskId })`"
+			:style="{ stroke: 'none', fill: `url(#${ memGradientId })`, mask: `url(#${ memMaskId })` }"
 		/>
 		<text x="1" y="5">MEM <tspan>{{ memP }}%</tspan></text>
 	</svg>