Описание
There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | code not built |
| devel | not-affected | code not built |
| disco | ignored | end of life |
| eoan | not-affected | code not built |
| esm-apps/bionic | not-affected | code not built |
| esm-apps/xenial | not-affected | code not built |
| esm-infra-legacy/trusty | DNE | |
| esm-infra/focal | not-affected | code not built |
| focal | not-affected | code not built |
| precise/esm | DNE |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | uses system openssl1.0 |
| devel | not-affected | uses system openssl1.1 |
| disco | not-affected | uses system openssl1.1 |
| eoan | not-affected | uses system openssl1.1 |
| esm-apps/bionic | not-affected | uses system openssl1.0 |
| esm-apps/focal | not-affected | uses system openssl1.1 |
| esm-apps/xenial | not-affected | uses system openssl |
| esm-infra-legacy/trusty | not-affected | uses system openssl |
| focal | not-affected | uses system openssl1.1 |
| precise/esm | DNE |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | released | 1.1.1-1ubuntu2.1~18.04.6 |
| devel | released | 1.1.1f-1ubuntu1 |
| disco | ignored | end of life |
| eoan | released | 1.1.1c-1ubuntu4.1 |
| esm-infra-legacy/trusty | not-affected | |
| esm-infra/bionic | released | 1.1.1-1ubuntu2.1~18.04.6 |
| esm-infra/focal | released | 1.1.1f-1ubuntu1 |
| esm-infra/xenial | released | 1.0.2g-1ubuntu4.16 |
| focal | released | 1.1.1f-1ubuntu1 |
| precise/esm | not-affected |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | released | 1.0.2n-1ubuntu5.4 |
| devel | DNE | |
| disco | DNE | |
| eoan | DNE | |
| esm-infra-legacy/trusty | DNE | |
| esm-infra/bionic | released | 1.0.2n-1ubuntu5.4 |
| esm-infra/focal | DNE | |
| focal | DNE | |
| precise/esm | DNE | |
| trusty | DNE |
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EPSS
5 Medium
CVSS2
5.3 Medium
CVSS3
Связанные уязвимости
There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).
There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).
There is an overflow bug in the x64_64 Montgomery squaring procedure u ...
EPSS
5 Medium
CVSS2
5.3 Medium
CVSS3