| Summary | LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a. |
|---|---|
| Publication Date | Oct. 30, 2019, 4:15 a.m. |
| Registration Date | Jan. 26, 2021, 11:39 a.m. |
| Last Update | Nov. 21, 2024, 1:29 p.m. |
| CVSS3.1 : HIGH | |
| スコア | 7.5 |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更なし |
| 機密性への影響(C) | 高 |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | なし |
| CVSS2.0 : MEDIUM | |
| Score | 5.0 |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃前の認証要否(Au) | 不要 |
| 機密性への影響(C) | 低 |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | なし |
| Get all privileges. | いいえ |
| Get user privileges | いいえ |
| Get other privileges | いいえ |
| User operation required | いいえ |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:* | 0.9.12 | ||||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | |||||
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | |||||
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | |||||
| cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | |||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | |||||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | |||||
| Configuration4 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:simatic_itc1500_firmware:*:*:*:*:*:*:*:* | 3.0.0.0 | 3.2.1.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:simatic_itc1500:-:*:*:*:*:*:*:* | ||||
| Configuration5 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:simatic_itc1500_pro_firmware:*:*:*:*:*:*:*:* | 3.0.0.0 | 3.2.1.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:simatic_itc1500_pro:-:*:*:*:*:*:*:* | ||||
| Configuration6 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:simatic_itc1900_firmware:*:*:*:*:*:*:*:* | 3.0.0.0 | 3.2.1.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:simatic_itc1900:-:*:*:*:*:*:*:* | ||||
| Configuration7 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:simatic_itc1900_pro_firmware:*:*:*:*:*:*:*:* | 3.0.0.0 | 3.2.1.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:simatic_itc1900_pro:-:*:*:*:*:*:*:* | ||||
| Configuration8 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:simatic_itc2200_firmware:*:*:*:*:*:*:*:* | 3.0.0.0 | 3.2.1.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:simatic_itc2200:-:*:*:*:*:*:*:* | ||||
| Configuration9 | or higher | or less | more than | less than | |
| cpe:2.3:o:siemens:simatic_itc2200_pro_firmware:*:*:*:*:*:*:*:* | 3.0.0.0 | 3.2.1.0 | |||
| execution environment | |||||
| 1 | cpe:2.3:h:siemens:simatic_itc2200_pro:-:*:*:*:*:*:*:* | ||||
| Title | LibVNC における有効なライフタイム後のリソースの解放の欠如に関する脆弱性 |
|---|---|
| Summary | LibVNC には、有効なライフタイム後のリソースの解放の欠如に関する脆弱性、および初期化に関する脆弱性が存在します。 |
| Possible impacts | 情報を取得される可能性があります。 |
| Solution | ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。 |
| Publication Date | Aug. 19, 2019, midnight |
| Registration Date | Nov. 11, 2019, 5:21 p.m. |
| Last Update | Nov. 11, 2019, 5:21 p.m. |
| LibVNC |
| LibVNCServer d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a 未満 |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2019年11月11日] 掲載 |
Nov. 11, 2019, 5:21 p.m. |